Item Description

21 In.H-W 6.5 In.L Extrd Alu Backdraft Dampr Damper Application Backdraft For Nominal Duct Diameter Not Applicable Frame Material Aluminum Number of Panels 1 Maximum Air Velocity 3250 fpm Overall Height 21 in Rough Opening Diameter 18 1/2 in Rough Opening Shape Square Fits Fan Diameter 18 in For Duct Shape Not Applicable Free Area 2 sq ft Overall Width 21 in Frame Material Thickness 0.8 in Overall Length 6 1/2 in Connection Type Not Applicable Frame Depth 3 in

Manufacturer Name: DAYTON

Manufacturer Part Number: 4FZH5

Brand Name: DAYTON

Country of Origin: United States (US)

National Stock Number: n/a

Unit of Measure: EA

Item Weight: 6.850 pounds

UNSPSC: 30151801 | UPC: n/a

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