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
24×24 24×24 24×24 24×24
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
24 Ø
1½
1
–
3000
4
●
* Tunnel Type Corridor ceiling installation has 1 hr rating
6
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