DIV 23 · HVACDAMPERSCUT SHEET INDEXED

Greenheckbr-40, br-41, br-42 relief damperbr-40

Greenheck Barometric Relief Damper (BR-40 Series). Model BR-40, BR-41, BR-42. Eccentrically pivoted backdraft damper for low velocity systems; On-blade counterweights for fine-tuned start-to-open operation; Ball bearings minimize friction; Selectable start open pressure from 0.05 to 0.30 in. wg. material: Galvanized Steel Frame, Aluminum Blade

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Greenheck br-40 cut sheet — first page
Official manufacturer data sheetOpen PDF ↗
Manufacturer
Greenheck
Catalog no.
br-40
Product type
Dampers
MasterFormat
23
Cut sheet
PDF · manufacturer current

Product details

Catalog numberbr-40
DescriptionGreenheck Barometric Relief Damper (BR-40 Series). Model BR-40, BR-41, BR-42. Eccentrically pivoted backdraft damper for low velocity systems; On-blade counterweights for fine-tuned start-to-open operation; Ball bearings minimize friction; Selectable start open pressure from 0.05 to 0.30 in. wg. material: Galvanized Steel Frame, Aluminum Blade
Connection sizeMin 8x6 in (203x152 mm), Max Single 48x74 in (1220x1880 mm), Max Multi 96x148 in (2438x3759 mm)
End connectionNo Flange (BR-40), Flange on Discharge (BR-41), Flange on Intake (BR-42)
Pressure RatingBack Pressure 2.0 in. wg (0.5 kPa),
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