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
144×96 288×48 144×96 288×48 144×96 288×48 144×96 288×48 144×96 288×48
–
3V
6×6
SD-141
1
2000
4
3V
6×6
SD-142
2
2000
4
●
3V
6×6
SD-143
3
2000
4
●
–
AIRFOIL
8×6
SD-151
1
4000
8
–
AIRFOIL
8×6
SD-152
2
4000
8
–
VERT AIRFOIL
8×8
SD-151-V
1
2000
4
96×36
–
–
VERT AIRFOIL
8×8
SD-152-V
2
4000
4
96×36
–
ALUMINUM AIRFOIL
12×10
SD-93
1
3000
4
36×48
–
TRUE ROUND SD-25R
ROUND
6 Ø
24 Ø
24 Ø
1
3000
4
●
CEILING RADIATION/SMOKE 3* CFS-171
12×12 24w or 12h ≤ 144in 2 12×12 24w or 12h ≤ 144in 2
–
2000
4
–
3V
6×6
CFS-172
–
2000
4
–
3*
3V
6×6
* Tunnel Type Corridor ceiling installation has 1 hr rating
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