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Model SD-181-SS
Smoke Damper
Airfoil Blade
The SD-181-SS smoke damper employs 304 stainless steel airfoil blades for point-of-origin control of smoke in static and dynamic smoke management systems. The SD-181-SS is qualified to 2,000 ft/min (10.16 m/s) and 4 in.wg. (1.0 kPa) and may be installed in vertical walls or partitions
Standard Construction
Frame: 5" x 1" (127 x 25) stainless steel hat channel with interlocking corner gusset. Equivalent to 13 ga. (2.4) channel frame. Low profile head and sill are used on sizes less than 13" (330) high.
Blades: 6" x 14 ga. (152 x 2.0) equivalent stainless steel - airfoil.
Side-Plate: 12" x 20 ga. (305 x 1.0) stainless steel.
Axles: 1/2" (13) diameter stainless steel hex.
Linkage: Concealed in frame.
Bearings: Stainless steel oilite, sleeve-type.
Seals: Silicone blade edge seals inegrally rolled and mechanicaly fastened to blades. Flexible metal jamb seals.
Actuator: 120 VAC, power-open, spring-close, external mount.
Minimum Size: 8" x 6" (203 x 152)
Type C: 6" × 4" (152 × 102)
Maximum Size: Single Section: 24" x 36" (914 x 1219)
Type C: 22" × 34" (559 × 864)
Multiple Section: Vertical: 96" x 72" (3658 x 2438) or
192" x 36" (7315 x 1219)
Ratings
UL 555S Leakage Class: 1
Maximum Temperature: 350oF (177oC)
UL 555S Listing: R14981
CSFM Listing: 3230-1404:107
New York City MEA Listing: 295-98-E
Meets NFPA Standards: 90A, 92A, 92B, 101 and 105
Meets Building Code Standards: IBC, NBC, NFPA, SBC and UBC