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
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* *
● – – – –
●
● –
– – –
3 3 3
* *
●
●
* Stainless Steel Max. Size: 36"× 48"
3
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