27 In.H-W 6 In.L Aluminum Wall Backdraft Dampr Damper Application Backdraft For Nominal Duct Diameter Not Applicable Frame Material Galvanized Steel Number of Panels 1 Maximum Air Velocity 2000 fpm Overall Height 27 in Rough Opening Diameter 24 1/2 in Rough Opening Shape Square Fits Fan Diameter 24 in For Duct Shape Not Applicable Free Area 3.3 sq ft Overall Width 27 in Frame Material Thickness 20 ga Overall Length 6 in Connection Type Not Applicable Frame Depth 2 1/4 inMRO2C523
| # | Attribute | Value |
|---|---|---|
| 1. | brand | DAYTON |

