UL-brochure

COMBINATION FIRE/SMOKE DAMPERS • SMOKE DAMPERS FIRE DAMPERS • CEILING RADIATION DAMPERS LIFE SAFETY PRODUCTS

Selection Guide

Combination Fire/Smoke dampers UL HOUR RATING AMCA RATING MODEL

MAX VELOCITY (fpm)

MAX PRESSURE (in.wg)

MAX ASSEMBLY TEMP (°F)

LEAKAGE CLASS

BLADE TYPE

MATERIAL

STANDARD FSD-141 FSD-142 FSD-143 FSD-151 FSD-152 FSD-151-SS FSD-152-SS

3 3 3 4 4 4 4 4 4 3 3 3 4 4 5 5 5 5 5 5 5 5 5 5 5

AIR AIR – AIR AIR AIR AIR AIR AIR AIR AIR AIR AIR AIR

1½ 1½ 1½ 1½ 1½ 1½ 1½ 1½ 1½

1 2 3 1 2 1 2 1 2 1 2 3 1 2 1 2 3 1 2 1 2 1 2 1 2

TRIPLE-V TRIPLE-V TRIPLE-V AIRFOIL AIRFOIL

GALV GALV/SS GALV/SS

2000 2000 2000 4000 4000 2000 2000 2000 4000 2000 2000 2000 4000 4000 2000 2000 2000 4000 4000 2000 2000 2000 2000 4000 4000

4 4 4 8 8 4 4 4 4 4 4 4 8 8 4 4 4 8 8 4 4 4 4 8 8

350 350 350 350 350 350 350 250 250 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350

GALV GALV

STAINLESS AIRFOIL STAINLESS AIRFOIL

STAINLESS STAINLESS

VERT AIRFOIL VERT AIRFOIL

GALV GALV

FSD-151V FSD-152V

3 3 3 3 3 FSD-341 FSD-342 FSD-343 FSD-351 FSD-352 ACTUATOR IN THE AIRSTREAM – OUT-OF-PARTITION

TRIPLE-V TRIPLE-V TRIPLE-V AIRFOIL AIRFOIL TRIPLE-V TRIPLE-V TRIPLE-V AIRFOIL AIRFOIL TRIPLE-V TRIPLE-V TRIPLE-V TRIPLE-V AIRFOIL AIRFOIL

GALV/SS GALV/SS GALV/SS

GALV GALV

– – – – – – – – – – – – FSD-141-SP FSD-142-SP FSD-151-SP FSD-152-SP TRUE ROUND FSD-125R TUNNEL TYPE CORRIDOR CEILING FSD-141-OP FSD-142-OP FSD-143-OP FSD-151-OP FSD-152-OP FSD-171-OP FSD-172-OP SIDE PANEL – FRONT/ACCESS

1½ 1½ 1½ 1½ 1½ 1½ 1½ 1½ 1½ 1½ 1½

GALV GALV GALV GALV GALV GALV GALV GALV GALV GALV GALV

1½

ROUND

GALV/SS

3000

350

6 6 5 5

– – – –

1½* 1½* 1½* 1½*

1 2 1 2

TRIPLE-V TRIPLE-V TRIPLE-V TRIPLE-V

GALV GALV GALV GALV

2000 2000 2000 2000

4 4 4 4

350 350 350 350

FSD-171 FSD-172

FSD-171-OP FSD-172-OP

* Tunnel Type Corridor ceiling installation has 1 hr rating

Smoke dampers

MAX DYNAMIC CLOSURE VELOCITY (fpm)

UL HOUR RATING

MAX PRESSURE (in.wg)

UL555S LEAKAGE CLASS

MAX TEMP (°F)

HORIZ FLOORS

VERT WALLS

MODEL

CEILING

FIRE

BLADE TYPE

MATERIAL

STANDARD SD-141 SD-142 SD-143 SD-151 SD-152 SD-151-V SD-152-V

9 9 9 9 9 9 9 9 9 9

– – – – – – – – – –

TRIPLE-V TRIPLE-V TRIPLE-V AIRFOIL AIRFOIL

GALV GALV/SS GALV/SS

2000 2000 2000 4000 4000

4 4 4 8 8 4 4 4 4 4

350 350 350 350 350 250 250 350 350 250

1 2 3 1 2 1 2 1 2 1

2000 2000 2000 4000 4000 2000 4000 2000 2000 3000

GALV GALV GALV GALV

VERT AIRFOIL VERT AIRFOIL

– –

ROUND SD-151-SS SD-152-SS SD-93 TRUE ROUND SD-25R CEILING RADIATION/SMOKE

STAINLESS AIRFOIL STAINLESS AIRFOIL ALUMINUM AIRFOIL

STAINLESS STAINLESS GALV/ALUM

2000 2000 –

–

GALV/SS

3000

350

3000

9 9

CFS-171 CFS-172

3* 3*

1½ 1½

TRIPLE-V TRIPLE-V

GALV GALV

2000 2000

4 4

350 350

1 2

– –

* Tunnel Type Corridor ceiling installation has 1 hr rating

Selection Guide continued

Ceiling radiation damperS

UL HOUR RATING

MODEL

BLADE TYPE

MATERIAL

STANDARD CFD-15 CFD-15-LP CFD-20 TRUE ROUND CFD-15R WOOD TRUSS SYSTEMS CFD-521

10 10 10

BUTTERFLY LOW PROFILE BUTTERFLY FOLDED CURTAIN

GALV GALV GALV

3 3 3

ROUND BUTTERFLY

GALV

10 10 10 10 10 10

BUTTERFLY BUTTERFLY – 90° PLENUM BUTTERFLY – R-6.3 OR 8.0 INSULATED OUTLET BOX BUTTERFLY – R-6.5 OR 8.7 INSULATED DUCT BOARD OUTLET BOX BUTTERFLY BUTTERFLY – FIELD INSTALLED 90° PLENUM

GALV GALV GALV GALV GALV GALV

1 1 1 1 1 1

1 CFD-521-90 CFD-521-BT CFD-521-IP CFD-521-NP CFD-521-NP90 COLD FORMED STEEL TRUSS SYSTEMS CFD-521-ST

BUTTERFLY – R-6.5 OR 8.7 INSULATED DUCT BOARD OUTLET BOX

GALV

FIRe dampers

MAX DYNAMIC CLOSURE VELOCITY (fpm)

MAX PRESSURE (in.wg)

UL HOUR RATING

STATIC DYNAMIC

BLADE TYPE

VERT WALLS

HORIZ FLOORS

MODEL

MATERIAL

CLASS

STANDARD FD-140 FD-150 FD-340 FD-350 CURTAIN STYLE BLADES

11 11 11 11 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 11 11 12 12 11 11 11 12 12 12 12

DYNAMIC DYNAMIC DYNAMIC DYNAMIC

1½ 1½

– – – – A B C A B C A B C A B C A B A B – – – – – – – A B A B

TRIPLE-V AIRFOIL TRIPLE-V AIRFOIL CURTAIN CURTAIN CURTAIN CURTAIN CURTAIN CURTAIN CURTAIN CURTAIN CURTAIN CURTAIN CURTAIN CURTAIN CURTAIN CURTAIN CURTAIN CURTAIN TRIPLE-V AIRFOIL CURTAIN CURTAIN

GALV/SS GALV GALV/SS GALV GALV/SS GALV/SS GALV/SS GALV/SS GALV/SS GALV/SS GALV/SS GALV/SS GALV/SS GALV/SS GALV/SS GALV/SS

4000* 4000* 4000* 4000*

4000* 4000* – 4000*

6 6*** 6 6**

3 3

STATIC STATIC STATIC

1½ 1½ 1½ 1½ 1½ 1½

– – –

– – – 4 4 4 – – – 4 4 4 – – 4 4

VFD-10-A VFD-10-B VFD-10-C VFD-10D-A VFD-10D-B VFD-10D-C VFD-30-A VFD-30-B VFD-30-C

DYNAMIC DYNAMIC DYNAMIC

4000 4000 4000

STATIC STATIC STATIC

3 3 3 3 3 3

– – –

– – – – – – – – – –

DYNAMIC DYNAMIC DYNAMIC VFD-30D-A VFD-30D-B VFD-30D-C CURTAIN-INTEGRAL MOUNTING ANGLE

4000 4000 4000

STATIC STATIC

1½ 1½ 1½ 1½ 1½ 1½ 1½ 1½ 1½ 1½ 3 1½ 1½ 1½ 1½

GALV GALV GALV GALV

– –

VFD-10-IMA VFD-10-IMB

DYNAMIC DYNAMIC

4000 4000

VFD-10D-IMA VFD-10D-IMB OUT-OF-PARTITION

DYNAMIC DYNAMIC STATIC DYNAMIC DYNAMIC STATIC STATIC

GALV/SS GALV GALV GALV GALV/SS GALV GALV

4000 4000 – 4000 2000 – –

6 6**

FD-140-OP FD-150-OP VFD-10-OP

– 4

VFD-10D-OP TRUE ROUND

ROUND ROUND ROUND

4 – – – – 4 4

FD-125R VFD-15R VFD-35R THINLINE

STATIC STATIC

THINLINE CURTAIN THINLINE CURTAIN THINLINE CURTAIN THINLINE CURTAIN

GALV GALV GALV GALV

– –

– – – –

VFD-10-TLA VFD-10-TLB VFD-10D-TLA VFD-10D-TLB

DYNAMIC DYNAMIC

4000* 4000*

*2000 FPM on multi-section | **4 in.wg. below 8" in height | ***4 in.wg. when sizes exceed 64"×48" or 32"×96"

FIRE/SMOKE DAMPERS

FSD-140 AND FSD-340 SERIES

TRIPLE-V BLADE – COMBINATION FIRE/SMOKE DAMPER

Combination fire/smoke dampers combine the fire barrier protection of a fire damper and smoke control of a smoke damper. Pottorff tests all of our combination fire/smoke dampers to UL’s stringent requirements for fire resistance and leakage control. The FSD-140 and FSD-340 series dampers are equipped with triple-V interlocking blades that perform to standards when velocities are 2000 fpm or less. These dampers are an economical solution to fire and smoke control in HVAC systems. ¢ 1½ to 3 Hour UL 555 Rating ¢ Class I, II, and III UL 555S Ratings ¢ Meets NFPA Standards ¢ Stainless steel option available on certain models ¢ CSFM Listing ¢ Maximum Temperature: 350°

FSD-142 WITH SLEEVE

ECONOMICAL ROLL-FORMED TRIPLE-V GROOVED BLADES

Certified Ratings: Pottorff certifies that the models FSD-141 and FSD-142 shown herein are licensed to bear the AMCA seal. The ratings shown are based on tests and procedures performed in accordance with AMCA publication 511 and comply with the requirements of the AMCA Certified Ratings Program. The AMCA Certified Ratings Seal applies to air performance ratings only.

FSD-141 WITH SIDE PLATE

MAXIMUM DYNAMIC CLOSURE RATING

DAMPER MAXIMUM SIZE (in)

UL555S LEAKAGE CLASS

UL555 FIRE RESISTANCE (hr)

AMCA CERT

MIN SIZE (in)

MODEL

PRESSURE (in.wg.)

VELOCITY (fpm)

WALL

FLOOR

–

FSD-141 FSD-142 FSD-143 FSD-341 FSD-342 FSD-343

6×6 6×6 6×6 6×6 6×6 6×6

144×96 144×96 144×96 108×96 108×96 108×96

108×48 108×48 108×48

1½ 1½ 1½

1 2 3 1 2 3

2000 2000 2000 2000 2000 2000

4 4 4 4 4 4

●

* *

● – – – –

●

● –

– – –

3 3 3

* *

●

* Stainless Steel Max. Size: 36"× 48"

FIRE/SMOKE DAMPERS

FSD-150 AND FSD-350 SERIES

AIRFOIL BLADE – COMBINATION FIRE/SMOKE DAMPER

Pottorff’s FSD-150 and FSD-350 series are our high performance combination fire/smoke dampers. The low-profile airfoil blade allows for lower pressure drop, airflow velocities up to 4000 fpm and pressures up to 8 in.wg.

¢ 1½ to 3 Hour UL 555 Rating ¢ Class I and II UL 555S Ratings ¢ Horizontal and vertical blade models ¢ Meets NFPA Standards ¢ CSFM Listing

UL APPROVED FOR CLASS 1 LEAKAGE AT 4000 FPM AND 8 IN.WG STATIC PRESSURE! STAINLESS STEEL MODELS NOW AVAILABLE FOR CORROSIVE AND HIGH HUMIDITY ENVIRONMENTS!

¢ Maximum Temperature: 350° ¢ Stainless Models Available

FSD-151 WITH SLEEVE

LOW PROFILE AIRFOIL BLADES FOR HIGH PERFORMANCE

FSD-152 WITH SIDE PLATE

Certified Ratings: Pottorff certifies that the model FSD-151 shown herein is licensed to bear the AMCA seal. The ratings shown are based on tests and procedures performed in accordance with AMCA publication 511 and comply with the requirements of the AMCA Certified Ratings Program. The AMCA Certified Ratings Seal applies to air performance ratings only.

FSD-151-V VERTICAL BLADE OPTION

MAXIMUM DYNAMIC CLOSURE RATING

DAMPER MAXIMUM SIZE (in)

UL555S LEAKAGE CLASS

UL555 FIRE RESISTANCE (hr)

MIN SIZE (in)

AMCA CERT

MODEL

VELOCITY (fpm)

PRESSURE (in.wg.)

FLOOR

WALL

144×48 128×96 144×48 128×96

FSD-151

1½

8×6

4000

120×96

●

–

FSD-152 FSD-151-SS

1½

8×6

4000

120×96

–

96×72

–

1½

8×6

2000

STAINLESS STEEL BLADES

FSD-152-SS

–

96×72

–

1½

8×6

2000

STAINLESS STEEL BLADES

FSD-151V VERTICAL BLADES FSD-152V VERTICAL BLADES

–

96×32

–

1½

8×8

2000

–

96×32

–

1½

8×8

4000

–

120×96

64×96

FSD-351

8×6

4000

–

120×96

64×96

FSD-352

8×6

4000

FIRE/SMOKE DAMPERS

OUT-OF-PARTITION AND SIDE PANEL

Out-of-Partition dampers feature the actuator within the airstream. This allows direct service through the face of the HVAC grille. ¢ 1½ hour UL 555 Rating ¢ Class I, II and III UL 555S Ratings ¢ Meets NFPA Standards ¢ CSFM Listing ¢ Maximum Temperature: 350°

FSD-151-OP

Side Panel dampers are specifically designed to have an out of the airstream actuator with direct access from the face of the damper through the HVAC grille. ¢ UL 555 1½ Hour Rating ¢ Class I, and II UL 555S Ratings ¢ Meets NFPA Standards ¢ CSFM Listing ¢ Maximum Temperature: 350°

FSD-151-SP

ECONOMICAL ROLL-FORMED TRIPLE-V GROOVED BLADES

LOW PROFILE AIRFOIL BLADES FOR HIGH PERFORMANCE

MAXIMUM DYNAMIC CLOSURE RATING

DAMPER MAXIMUM SIZE (in)

UL555S LEAKAGE CLASS

UL555 FIRE RESISTANCE (hr)

MIN SIZE (in)

BLADE TYPE

MODEL

PRESSURE (in.wg.)

VELOCITY (fpm)

WALL

FLOOR CORRIDOR CEILING

OUT-OF-PARTITION FSD-141-OP FSD-142-OP FSD-143-OP FSD-151-OP FSD-152-OP FSD-171-OP FSD-172-OP SIDE PANEL FSD-141-SP FSD-142-SP FSD-151-SP FSD-152-SP

– – – – –

2000 2000 2000 4000 4000 2000 2000 2000 2000 4000 4000

4 4 4 8 8 4 4 4 4 8 8

1 2 3 1 2 1 2 1 2 1 2

1½ 1½ 1½ 1½ 1½

3V 3V 3V

10×6 10×6 10×6 10×6 10×6 10×6 10×6 14×8 14×8 16×8 16×8

36×48 36×48 36×48 36×36 36×36 24×24 24×24 44×48 44×48 40×36 40×36

AIRFOIL AIRFOIL

24×24 24×24

1½* 1½*

3V 3V

– – – –

1½ 1½ 1½ 1½

3V 3V

AIRFOIL AIRFOIL

* Tunnel Type Corridor ceiling installation has 1 hr rating

FIRE/SMOKE DAMPERS

FSD-170 SERIES

TUNNEL CORRIDOR DAMPERS

Tunnel corridor dampers are efficient for installation in horizontal openings of metal stud or wood stud tunnel-type corridor ceilings. These combination fire/smoke dampers feature economical triple-V blades. ¢ 1½ Hour UL 555 Rating ¢ Class I, II and III UL 555S Classified ¢ Meets NFPA Standards ¢ Out-of-Partition models available ¢ CSFM Listing ¢ Maximum Temperature: 350°

FSD-171

ECONOMICAL ROLL-FORMED TRIPLE-V GROOVED BLADES

FSD-125R

TRUE ROUND

The FSD-125R is a combination fire/smoke damper that installs precisely within round ducted systems. It is UL 555 rated to 1½ hours and perform to 3000 fpm. ¢ Class I and II UL 555S Ratings ¢ Square Mounting Plates are standard ¢ Meets NFPA Standards ¢ Stainless Steel Construction Available ¢ CSFM Listing

FSD-125R

MAXIMUM DYNAMIC CLOSURE RATING

DAMPER MAXIMUM SIZE (in)

UL555S LEAKAGE CLASS

UL555 FIRE RESISTANCE (hr)

MIN SIZE (in)

MODEL

VELOCITY (fpm)

PRESSURE (in.wg.)

CORRIDOR CEILING

WALL

FLOOR

TUNNEL CORRIDOR FSD-171 FSD-172

1½* 1½* 1½* 1½*

1 2 1 2

6×6 6×6

24×24 24×24 24×24 24×24

2000 2000 2000 2000

4 4 4 4

– – – –

10×6 10×6

FSD-171-OP FSD-172-OP TRUE ROUND FSD-125R

6 Ø

24 Ø

1½

–

3000

●

* Tunnel Type Corridor ceiling installation has 1 hr rating

ELEVATED TEMPERATURE/Airflow LABORATORY Pottorff’s commitment to accurate and credible performance data is highlighted by our state-of-the-art elevated temperature test lab. Features include:

¢ 5000 fpm maximum velocity ¢ 500° F maximum temperature ¢ 20 in.wg. maximum static pressure ¢ UL-555 and UL-555S compliance testing ¢ AMCA 500D performance testing

The lab features a 4375 cu.ft. chamber with 25 nozzles, 8 settling screens and a 35 million BTU burner. The system has three fans capable of generating up to 97,000 CFM. All equipment has been designed per AMCA 500D and is currently in the process of getting UL and AMCA certification. This lab allows Pottorff to streamline product development efforts, as well as enhance current product offerings.

CONTROL CENTER Our staff can control testing parameters at this computer integrated control station.

TEST MODEL Models are mounted here to simulate their installation in typical HVAC ductwork.

4375 CUBIC FOOT CHAMBER

SETTLING SCREENS Eight individual settling screens to produce the most laminar air possible.

NOZZLES 25 – 10 in. cast and

THREE FANS Two Twin Loren Cook centrifugal paddle blade fans producing a total of 90,000 cfm and up to 10 in.wg. of static pressure, and a Loren Cook centrifugal paddle blade fan capable of 9,000 cfm and 30 in.wg. of static pressure.

35 MILLION BTU This burner can generate up to 35 million BTU, giving it the ability to perform elevated temperature testing and meet most requirements defined by life safety needs.

machined aluminum nozzles that help control amount of airflow through the system.

PLENUM This gives us the ability to adjust to the ductwork and test products in many sizes up to 125" × 125".

DUCT WORK This duct work meets

AMCA 500D requirements in sizes from 6" × 6" to 72" × 48".

SMOKE DAMPERS

TRIPLE-V, STEEL AIRFOIL AND ALUMINUM AIRFOIL BLADE SMOKE DAMPERS

A smoke damper provides a positive shutoff of HVAC ducts to help prevent the spread of smoke through an air control system. Pottorff smoke dampers pass UL’s 555S stringent leakage testing requirements and are available in Class I, II, and III. ¢ Meets NFPA Standards ¢ Stainless Steel Construction Available ¢ CSFM Listing ¢ Maximum Temperature: 350°

SD-93 ALUMINUM AIRFOIL BLADE

ECONOMICAL ROLL-FORMED TRIPLE-V GROOVED BLADES

The aluminum blade, SD-93 Industrial Smoke Damper. This damper features Class 1 UL rated leakage at multiple section sizes.

LOW PROFILE AIRFOIL BLADES FOR HIGH PERFORMANCE

SD-141 WITH SMOKE DETECTOR

ALUMINUM AIRFOIL BLADES FOR THE HIGHEST PERFORMANCE

SD-25R

CEILING RADIATION SMOKE DAMPERS

A ceiling radiation smoke damper is utilized to protect penetrations in fire rated ceilings or floors in HVAC systems. Pottorff’s CFS-170 series passes UL’s stringent testing for fire resistance and leakage control.

¢ UL 555C 3 Hour Rating ¢ Class I and II UL 555S ¢ Meets NFPA Standards

¢ CSFM Listing ¢ Maximum Temperature: 350° ¢ Standard Sleeve Outlet Box

¢ Standard Top Duct Connection ¢ Optional Side Duct Connection

CFS-171

MAXIMUM DYNAMIC CLOSURE RATING

DAMPER MAXIMUM SIZE (in)

UL555S LEAKAGE CLASS

MIN SIZE (in)

BLADE TYPE

VELOCITY (fpm)

PRESSURE (in.wg.)

MODEL

WALL

FLOOR

144×96 288×48 144×96 288×48 144×96 288×48 144×96 288×48 144×96 288×48

–

6×6

SD-141

2000

6×6

SD-142

2000

●

6×6

SD-143

2000

●

–

AIRFOIL

8×6

SD-151

4000

–

AIRFOIL

8×6

SD-152

4000

–

VERT AIRFOIL

8×8

SD-151-V

2000

96×36

–

VERT AIRFOIL

8×8

SD-152-V

4000

96×36

–

ALUMINUM AIRFOIL

12×10

SD-93

3000

36×48

–

TRUE ROUND SD-25R

ROUND

6 Ø

24 Ø

3000

●

CEILING RADIATION/SMOKE 3* CFS-171

12×12 24w or 12h ≤ 144in 2 12×12 24w or 12h ≤ 144in 2

–

2000

–

6×6

CFS-172

–

2000

–

6×6

* Tunnel Type Corridor ceiling installation has 1 hr rating

Ceiling radiation DAMPERS

STANDARD AND TRUE ROUND

Pottorff's ceiling radiation dampers create radiant heat barriers in HVAC systems. They are installed horizontally in the ceiling membrane of combustible floor-ceiling or roof-ceiling assemblies. ¢ UL 555C Rating up to 3 Hours

¢ Meets NFPA Standards ¢ Warnock Hersey Listing ¢ Galvanized Steel Construction ¢ CSFM Listing

CFD-20 CURTAIN BLADE

CFD-15R BUTTERFLY BLADE

WOOD TRUSS SYSTEM

FOR MORE EXPANDED INSTALLATION OPTIONS, SEE PAGE 13 ¢ Mounting with Boot Rails ¢ Expanded Duct Connections ¢ Extended Plenum Height

Pottorff's ceiling radiation dampers are the preferred solution for wood truss systems, and ideal for multi-family projects. ¢ UL 555C Rating of 1 Hour

CFD-521-IP

¢ Meets NFPA Standards ¢ Warnock Hersey Listing ¢ Galvanized Steel Construction ¢ CSFM Listing

CFD-521

CFD-521-90 BUTTERFLY BLADE

MAXIMUM SIZE (in)

DUCT CONNECTION

ROOF/FLOOR CEILING ASSEMBLIES

UL RATED WOOD-TRUSS ASSEMBLIES

SLEEVE OUTLET BOX

OUTLET BOX R VALUE

UL555 FIRE RESISTANCE (hr)

MIN SIZE (in)

BLADE TYPE

TOP

SIDE

MODEL

3 3 3 STANDARD CFD-15 CFD-15-LP CFD-20 TRUE ROUND CFD-15R WOOD TRUSS SYSTEMS 3

  

BUTTERFLY LOW PROFILE BTRFLY CURTAIN

4×6 6×12 4×4

24×24 24×24 24×24

– – –

  

–



4 Ø

24 Ø

ROUND BUTTERFLY

–



18×18 24w or 20h ≤ 324 in 2 12×12 (10 Ø) 14w×10h or 10w×14h ≤ 144in 2

–

4×6



BUTTERFLY

CFD-521

–





–

4×4 (4 Ø)

–

BUTTERFLY

CFD-521-90

–



12×12 24w or 24h ≤ 144 in 2

16×16 24w or 20h ≤ 256 in 2 16×16 24w×20h ≤ 256 in 2 12×12 (10 Ø) 14w or 10h ≤ 144 in 2 12×12 (10 Ø) 24w or 24h ≤ 144 in 2

R-6.3 or 8.0 R-6.5 or 8.7

4×6

–



BUTTERFLY

CFD-521-BT



–

4×6



BUTTERFLY

CFD-521-IP





–

4×6



BUTTERFLY

CFD-521-NP

–





–

BUTTERFLY

CFD-521-NP90

–



4×6 (4 Ø)

COLD FORMED STEEL TRUSS SYSTEMS

R-6.5 or 8.7

–



16×14

BUTTERFLY

CFD-521-ST

4×6

–



 OPTIONAL  STANDARD

* See Installation instructions for duct connection size and location restrictions

Fire Dampers

1 ½ AND 3HR RATED FIRE DAMPERS

Fire dampers are fire protection products used in heating, ventilation, and air conditioning ducts to prevent the spread of fire inside the ductwork through fire-resistance rated walls and floors. Fire dampers are UL555 tested and designed to close upon the detection of elevated heat.

¢ 1½ and 3 Hour UL 555 Rating ¢ System pressures up to 6 in.wg. ¢ Meets NFPA Standards ¢ Stainless Steel Construction Available ¢ CSFM Listing

ECONOMICAL ROLL-FORMED TRIPLE-V GROOVED BLADES

LOW PROFILE AIRFOIL BLADES FOR HIGH PERFORMANCE

FD-140

TRUE ROUND

Our round fire dampers are designed for use in fire rated walls and floors and are the perfect, economical, choice for round ducted systems. They are UL555 tested and designed to close upon the detection of elevated heat.

¢ 1½ and 3 Hour Rating ¢ Meets NFPA Standards ¢ Stainless Steel Construction Available ¢ CSFM Listing

VFD-15R

FD-125R

MAXIMUM DYNAMIC CLOSURE RATING

DAMPER MAXIMUM SIZE (in)

UL555 FIRE RESISTANCE (hr)

MIN SIZE (in)

MODEL

BLADE TYPE

PRESSURE (in.wg.)

VELOCITY (fpm)

WALL

FLOOR

STANDARD

72×48 36×96 128×96 120×96 72×48 36×96

72×48

4000*

FD-140

1½

6×6

●

–

120×96

4000*

6***

FD-150

1½

AIRFOIL

8×6

–

4000*

FD-340

6×6

●

–

64×96

4000*

6**

FD-350

AIRFOIL

8×6

OUT-OF-PARTITION FD-140-OP FD-150-OP

– –

6×6 8×6

36×48 36×36

4000 4000

6** 6

1½ 1½

3V AIRFOIL

TRUE ROUND FD-125R VFD-15R VFD-35R

8 Ø 6 Ø 6 Ø

24 Ø 20 Ø 20 Ø

24 Ø 20 Ø –

2000 – –

4 – –

1½ 1½ 3

ROUND ROUND BUTTERFLY ROUND BUTTERFLY

● – –

*2000 FPM on multi-sections | **4 in.wg. below 8" in height | ***4 in.wg. below 8" in height when sizes exceed 64"×48" or 32"×96"

See catalog online for stainless steel max sizes

Fire Dampers

CURTAIN BLADE FIRE DAMPERS

STATIC AND DYNAMIC

Fire dampers with curtain style blades are a cost savings solution to dynamic and static fire control. 1½ and 3 Hour UL 555 Rating ¢ Meets NFPA Standards ¢ Stainless Steel Construction Available ¢ CSFM Listing

OUR VFD-10D IS THE LARGEST SINGLE SECTION CURTAIN FIRE DAMPER IN THE INDUSTRY.

MIN SIZE (in)

MAXIMUM DYNAMIC CLOSURE RATING

DAMPER MAXIMUM SIZE (in)

UL555 FIRE RESISTANCE (hr)

STATIC DYNAMIC

VELOCITY (fpm)

PRESSURE (in.wg.)

MODEL

WALL

FLOOR

WALL

FLOOR

CURTAIN STYLE BLADES

108×24 108×21 106×20 108×24 108×21 106×20 48×48 48×44 36×48 36×44 120×80 80×120 120×76 80×116 118×75 78×115 72×120 120×72 120×69 72×117 118×68 70×116

4×4

6×6

80×80

–

VFD-10-A

1½

STATIC

●

4×2

6×4

80×76

–

VFD-10-B

1½

STATIC

●

4×2

4×3

78×75

–

VFD-10-C

1½

STATIC

●

76×96 76×93 74×91 36×36 72×18 36×34 72×16 34×33 70×15

4000**

VFD-10D-A

1½

DYNAMIC

6×6

●

4000**

VFD-10D-B

1½

DYNAMIC

6×4

●

4000**

VFD-10D-C

1½

DYNAMIC

4×3

●

STATIC STATIC STATIC

4×4 4×2 4×2 6×6 6×4 4×3 4×4 4×2 6×6 6×4

6×10 6×8 4×7

3 3 3 3 3 3

– – –

– – – 4 4 4 – – 4 4

VFD-30-A VFD-30-B VFD-30-C

● ● ● ● ● ●

DYNAMIC DYNAMIC DYNAMIC

– –

– – – – – – –

4000 4000 4000

VFD-30D-A VFD-30D-B VFD-30D-C CURTAIN INTEGRAL MOUNTED ANGLE

–

STATIC STATIC

– – – –

1½ 1½ 1½ 1½

– –

VFD-10-IMA VFD-10-IMB

DYNAMIC DYNAMIC

4000 4000

VFD-10D-IMA VFD-10D-IMB OUT-OF-PARTITION VFD-10-OP VFD-10D-OP THINLINE

STATIC DYNAMIC

6×6 6×6

36×36 36×36

– –

1½ 1½

– 4000

– 4

6×6 6×6

36×72 72×36 36×65 72×29 72×36 36×72 72×29 36×65

–

VFD-10-TLA

1½

THINLINE STATIC

4×4

–

VFD-10-TLB

1½

THINLINE STATIC

4×2

–

VFD-10D-TLA

1½

THINLINE DYNAMIC

6×6

–

4000*

–

VFD-10D-TLB

1½

THINLINE DYNAMIC

6×4

–

4000*

–

See catalog online for stainless steel max sizes

*2000 FPM on multi-section | ** 2000 FPM. Limited sizes for 4000 FPM (See catalog online)

Options/Installation

CONNECTION FLEXIBILITY

TRANSITION DUCT CONNECTIONS When duct connections are not the same shape or size as the damper, optional factory transitions include:

ROUND

OVAL

SQUARE

FLANGE CONNECTION

FLANGE DUCT CONNECTION

SINGLE SIDE MOUNTING ANGLES A Pottorff innovation, this labor saving system requires mounting angles on only one side of the partition. ¢ UL 555 tested for vertical and horizontal dampers ¢ Installs in masonry, wood stud and metal stud walls ¢ Can be concealed underneath the drywall on metal stud walls

OUT-OF-PARTITION INSTALLATION

SINGLE SIDE MOUNTING ANGLES

WOOD TRUSS RATED CEILING RADIATION DAMPER INSTALLATION OPTIONS

INSTALLATION OPTIONS When the CFD-521, CFD-521-IP and CFD-521-NP dampers are configured to close within 1/8" of the gypsum board used in wood truss floor/ceiling and roof/ceiling assemblies, duct connections can now be made on the top of the damper, or on any combination of sides.

The plenum height can now be extended to allow duct connections in roof/ceiling assemblies with increased insulation to adhere to new, more stringent energy guidelines.

Boot rails can be used to mount the damper to the rated assembly.

UL I503 – INSTALLATION

HORIZONTAL MOUNT DAMPERS IN NON-CONCRETE BARRIERS FOR FIRE AND COMBINATION FIRE/SMOKE DAMPERS

Single layer of 5 ⁄ 8 " Gypsum Board

With this installation, design professionals now have: ¢ Increased flexibility ¢ More usable space ¢ Reduced installation time

Two layers of 5 ⁄ 8 " Gypsum Board

Back to back steel joists

Pottorff offers Fire and Combination Fire/Smoke Dampers that are UL approved for horizontal installations at the top or bottom of gypsum and steel stud shafts.

Steel channel overlapping the joist

Accessories

ACTUATORS/SMOKE DETECTORS

MODULATING ACTUATOR OPTIONS Pottorff has expanded modulating actuator options for our out-of-partition and horizontally mounted steel airfoil combination fire/smoke dampers. The Belimo FSAFB24-SR(S) modulating actuator can be selected as an option on Pottorff’s horizontally mounted FSD-151 and FSD-152 dampers in assemblies up to 120"× 48" and on FSD-151-OP and FSD-152-OP dampers up to 36" × 24". ACTUATORS Electric actuators and pneumatic actuators ensure top quality actuation for smoke and combination fire/smoke dampers. ¢ Compact ¢ Maintenance free ¢ 5 Year warranty Standard model is 120 VAC, power-open, spring-close, external mount electric actuator. 24 VAC, 230 VAC, and modulating control options are also available.

FIRE CLOSURE AND POSITION INDICATIONS Our fire dampers are held open using a UL listed fusible link which melts at a predetermined temperature to permit the damper to close for protection. We now offer the PI-10 switch package which can be used to signal an alarm or fire control system to indicate blade closure on VFD dampers. Our fire/smoke dampers typically utilize a thermostat sensor that interrupts the power to the damper actuator and closes the damper. ¢ The PI-10 can be used in static or dynamic systems ¢ The HS-10 features a single temperature fire closure with manual test/reset buttons ¢ The DRS-30 features a dual temperature fire closure with manual test/reset buttons and integral PI-50 ¢ The PI-50 features positive open and closed blade position signal

PNEUMATIC ACTUATOR

¢ Maintenance free ¢ 5 Year warranty

DRS-30

HS-10

FSAFB24-SR ELECTRIC ACTUATOR

FACTORY MOUNTED SMOKE DETECTORS Smoke detector features fully integrated electrical wiring with a single point connection. A Pottorff innovation, this detector eliminates costly installation, wiring and interface coordination. ¢ UL and NFPA approved ¢ Standard external mount with duct velocity of 100-4000 fpm ¢ Optional internal mount system is ideal when detection is required under zero-flow conditions

D4120

PI-10 POSITION INDICATOR

PI-10 PI-50 – DUAL POSITION INDICATOR INDICATOR SWITCH PACKAGE

MANUFACTURER

ZS-100 – GALVANIZED ZS-260 – EXPLOSION PROOF ZS-300 – STAINLESS STEEL ACTUATOR ENCLOSURES DUCT SMOKE DETECTORS 2151 – 0-3000 FPM D4120 – 100-4000 FPM FIRE RELEASING DEVICE

MANUFACTURER

BELIMO BELIMO BELIMO

POTTORFF POTTORFF

REMOTE CONTROL PANELS

RCP-1 – SINGLE POSITION RCP-1K – SINGLE STATION W/KEY

POTTORFF POTTORFF POTTORFF POTTORFF

SYSTEM SENSOR SYSTEM SENSOR

RCP-1M – MOMENTARY TEST SWITCH RCP-1M-NL – MOMENTARY TEST SWITCH

REMOTE LIGHT PANELS

POTTORFF POTTORFF POTTORFF

DRS-30 – TWO TEMPERATURE HS-10 – ONE TEMPERATURE HS-10-M – MOMENTARY TEST SWITCH

POTTORFF POTTORFF

RLP-1 – 1-POSITION INDICATOR SWITCH RLP-2 – 2-POSITION INDICATOR SWITCH

Why Specify Pottorff?

HOW WE ARE DIFFERENT FROM THE COMPETITION: Innovation, quality, performance and service are what differentiate Pottorff from the competition. Founded in 1928, we are the authority in Life Safety Damper technology. It is our experience, versatility, and ability to react quickly to our customer’s needs which makes us the choice for architects and engineers.

¢ Ongoing commitment to personal and technical service ¢ Wide range of quality products ¢ Products delivered on time and on budget ¢ Innovative solutions for your design requirements ¢ Industry leading 5-year warranty

THE COMPANY WE KEEP Pottorff associates are active members of Underwriters Laboratories (UL) Committees and Advisory Council.

We are active members of AMCA’s Board of Directors and Code Action Review Committee and participate in the development of building codes, design regulations and test standards.

All products manufactured by Pottorff comply with the Buy American Act as described in the American Recovery and Reinvestment Act (ARRA). All fabrication of our products takes place in Fort Worth, Texas and Montebello, California.

QUICK SHIP PROGRAM Whether your project requires delivery in 1 week or the next day, Pottorff’s industry leading Quick Ship performance is guaranteed.

5101 Blue Mound Road • Fort Worth, Texas 76106 • tel: 817-509-2300 • fax: 817-831-3110 • www.pottorff.com

PBL – July 2026

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