| Item | Wall Backdraft Damper |
| Type | Wall Mount, Supply |
| Damper Size (In.) | 12 x 12 |
| Overall Size (In.) | 14-3/4 x 14-3/4 |
| Includes | Felted Edges for Quiet Operation |
| Outside Flange (In.) | 14-3/4 x 14-3/4 |
| Flange Width (In.) | 1 3/8 in |
| Max. Velocity (FPM) | 2,000 fpm |
| Use w/Dayton Ventilators | 4HZ46, 4HZ47 |
| Construction Material | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware |
| Blade | Aluminum Blade w/ Felt Seal |
| Rough Opening Dims | 11 1/2 in x 12.5 in |
| Switch Action | Normally Closed |
| Blade Material Thickness | 26 ga |
| Flange Type | Front Flange |
| Rough Opening Length | 11 1/2 in |
| Minimum Ambient Temperature | -40 Degrees F |
| Blade Type | Flat Blade |
| Closure Velocity Rating | 2,250 fpm |
| Damper Type | Static |
| Damper Application | Backdraft |
| Overall Length | 4 1/2 in |
| For Fuel Type | Not Applicable |
| Counterbalanced | Yes |
| Maximum Ambient Temperature | 180 Degrees F |
| Blade Material | Aluminum |
| Seal Material | Not Applicable |
| Blade Seal Material | Felt |
| Mounting Position | Vertical |
| Series | CWV |
| Flange Width | 1 1/2 in |
| Number of Panels | 1 |
| Opening Type | Spring |
| Closure Type | Gravity |
| Rough Opening Shape | Square |
| Overall Diameter | Not Applicable |
| Airflow Direction | Horizontal, Vertical |
| Maximum Pressure | 1 in wc |
| Single Acting/Double Acting | Single Acting |
| Tie-Rod Material | Galvanized Steel Frame and Tie Rods |
| Free Area | 0.7 sq ft |
| For Nominal Duct Diameter | Not Applicable |
| Rough Opening Width | 12.5 in |
| Connection Type | Not Applicable |
| Pressure Drop @ 1000 fpm (AMCA 5.2) | Not Applicable |
| Fits Fan Diameter | 12 in |
| Maximum Air Velocity | 2250 fpm |
| Frame Material | Aluminum |
| Fusible Link Temperature | Not Applicable |
| Frame Material Thickness | 0.1 in |
| Frame Depth | 1 5/8 in |
| ACMA Leakage Class | Not Applicable |
| Blade Orientation | Parallel Blades |
| For Duct Shape | Square |
| Damper Finish | Mill Finish |
| Frame Less Flange | 12 |
| Rough Opening Diameter | 12 1/2 in |
| Overall Width | 14 3/4 in |
| Overall Height | 14 3/4 in |
| Bushing Material | Stainless Steel |
| Country of Origin (subject to change) | United States |
| Package Quantity | 1 |
Damper, Backdraft, DAYTON, Mfr# 4HX74
$54,69
-3% / ea
with subscription
Free shipping will be applied on orders over $50
14.75 In.H-W 4.5 In.L Aluminum Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 14 3/4 in, Rough Opening Diameter 12 1/2 in, Rough Opening Shape Square, Fits Fan Diameter 12 in, For Duct Shape Square, Free Area 0.7 sq ft, Overall Width 14 3/4 in, Frame Material Thickness 0.1 in, Overall Length 4 1/2 in, Connection Type Not Applicable, Frame Depth 1 5/8 in
9999 in stock
Must order in multiples of 1
Subtotal:
$54.69
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