| Type | Backdraft Damper |
| Shape | Square |
| Item Diameter | 8 in |
| Brand | Dayton |
| Model | 3HHL4 |
| MPN | 3HHL4 |
| UPC | 190735289518 |
New Dayton 3HHL4 I may choose to not ship it in the original box shown in photos. Backdraft Exhaust Damper, No Flange, Horizontal or Vertical Mount, Damper Size (In.) 7-3/4 x 7-3/4, Overall Size (In.) 7-3/4 x 7-3/4, Flange Width (In.) -, Max. Velocity (FPM) 2,000 fpm, Construction Material G-90 Galvanized Steel Frame and Aluminum Blades, Includes Pre-punched Conduit Hole Knock-out and Felted Edges For Quiet Operation