| Item | Wall Backdraft Damper |
| Shutter Mounting Position | Vertical |
| Shutter Mounting Location | Wall |
| Shutter Construction Material | G-90 Galvanized Steel Frame and Tie Rods |
| Shutter Free Area | 2.519 sq ft |
| Shutter Opening Required | 22-1/2 in x 22-1/2 in |
| Shutter Overall Size | 25 in x 25 in |
| Fits Fan Dia. | 20 in |
| Blade Material | Aluminum |
| Max. Velocity | 2500 FPM |
| Width | 25 in |
| Mounting Hole Size | 9/64 in |
| Frame Opening B | 22 in |
| Flange Width | 1 1/2 in |
| Frame Opening A | 22 in |
| For Use With | Vertical Mounted Exhaust Fans |
| Shutter Item | Backdraft Damper / Wall Shutter |
| Frame Depth | 2 1/2 in |
| Open Depth | 5 3/4 in |
| Length | 25 in |
| Number of Panels | 1 |
| Includes | Prepunched Mounting Holes, Felt edged Counterbalanced Louvers, Weep Holes In Frame Bottom |
| Mounting Position | Vertical |
| Rough Opening Dims | 22 1/2 in x 22.5 in |
| Blade | Aluminum Blade w/ Felt Seal |
| Blade Type | Flat Blade |
| Overall Width | 25 in |
| Fusible Link Temperature | Not Applicable |
| Rough Opening Width | 22.5 in |
| Rough Opening Shape | Square |
| Fits Fan Diameter | 20 in |
| For Fuel Type | Not Applicable |
| ACMA Leakage Class | Not Applicable |
| Maximum Air Velocity | 2500 fpm |
| Bushing Material | Stainless Steel |
| Damper Finish | Mill Finish |
| Opening Type | Gravity |
| Flange Type | Rear Flange |
| Rough Opening Length | 22 1/2 in |
| Mounting Hole Diameter | 1/4 in |
| Frame Less Flange | 22 |
| Counterbalanced | Yes |
| Single Acting/Double Acting | Single Acting |
| Damper Application | Backdraft |
| Overall Length | 5 3/4 in |
| Damper Type | Static |
| For Duct Shape | Not Applicable |
| Frame Opening Height | 24 in |
| Overall Diameter | 25 in |
| Closure Type | Gravity |
| Airflow Direction | Horizontal |
| Series | 556 |
| For Nominal Duct Diameter | Not Applicable |
| Seal Material | Not Applicable |
| Blade Material Thickness | 26 ga |
| Switch Action | Normally Closed |
| Free Area | 2.5 sq ft |
| Frame Material | Galvanized Steel |
| Maximum Ambient Temperature | 180 Degrees F |
| Connection Type | Not Applicable |
| Blade Orientation | Parallel Blades |
| Maximum Pressure | 1 in wc |
| Pressure Drop @ 1000 fpm (AMCA 5.2) | Not Applicable |
| Overall Height | 25 in |
| Rough Opening Diameter | 22 1/2 in |
| Frame Material Thickness | 20 ga |
| Closure Velocity Rating | 2,500 fpm |
| Tie-Rod Material | Galvanized Steel Frame and Tie Rods |
| Blade Seal Material | Felt |
| Country of Origin (subject to change) | United States |
| Package Quantity | 1 |
20 in Backdraft Damper / Wall Shutter, 22-1/2 in x 22-1/2 in, DAYTON, Mfr# 53DR11
$86,99
Free shipping will be applied on orders over $50
25 In.H-W 5.75 In.L Alu Wall Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 25 in, Rough Opening Diameter 22 1/2 in, Rough Opening Shape Square, Fits Fan Diameter 20 in, For Duct Shape Not Applicable, Free Area 2.5 sq ft, Overall Width 25 in, Frame Material Thickness 20 ga, Overall Length 5 3/4 in, Connection Type Not Applicable, Frame Depth 2 1/2 in
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