

Specs
| Item | Backdraft Damper |
|---|---|
| Type | Roof Mount, Exhaust |
| Damper Size (In.) | 12 x 12 |
| Overall Size (In.) | 14 x 14 |
| Flange Width (In.) | 1 |
| Max. Velocity (FPM) | 2000 |
| Construction Material | G-90 Galvanized Steel Frame, Aluminum Blades, Stainless Steel Pivot Pins, Nylon Bushings and Galvanized Steel Tie Rods. |
| Use w/Dayton Ventilators | 4HZ32, 4HZ33, 4HZ36, 4HZ37, 4YC64-67, 4YC86 |
| Includes | Pre-punched Conduit Hole Knock-out and Felted Edges For Quiet Operation |
| UNSPSC | 40101504 |
| Weight | 3.000000 |
| SKUs | 4HX64 |
Description
- WARNING: Not for use with kitchen exhaust applications.
- G-90 galvanized steel frame, 2" deep with 1" flange. Aluminum louvers, stainless steel pivot pins, nylon bushings, and felted edge. Prepunched conduit hole knockout.
- Backdraft Dampers
- For belt-drive centrifugal roof and wall ventilators. Max. velocity: 2000 fpm for models up to 19" and no-flange, 2250 fpm for 23" and larger.






