DIV 23 · HVACDAMPERSCUT SHEET INDEXED

Greenheckfsd-311m modulating combination fire smoke damperfsd-311m

Greenheck Modulating Combination Fire Smoke Damper (Fire and Smoke Dampers). Model FSD-311M. Class I leakage rating; Fire resistance rating of 1.5 hours; Opposed airfoil blade action; Closure device temperature 165°F (74°C) standard. material: Galvanized steel frame (16 ga), Galvanized steel airfoil blades (14 ga equivalent)

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Official manufacturer data sheetOpen PDF ↗
Manufacturer
Greenheck
Catalog no.
fsd-311m
Product type
Dampers
MasterFormat
23
Cut sheet
PDF · manufacturer current

Product details

Catalog numberfsd-311m
DescriptionGreenheck Modulating Combination Fire Smoke Damper (Fire and Smoke Dampers). Model FSD-311M. Class I leakage rating; Fire resistance rating of 1.5 hours; Opposed airfoil blade action; Closure device temperature 165°F (74°C) standard. material: Galvanized steel frame (16 ga), Galvanized steel airfoil blades (14 ga equivalent)
Connection sizeMin 6x6 in (102x102 mm), Max 128x100 in (3251x2540 mm)
End connectionSleeved or unsleeved (sleeve thickness added for overall dimension)
Pressure RatingUp to 8 in. wg (2 kPa)
Flow RateUp to 4000 fpm (20.4 m/s)
FinishGalvanized.
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