| Adjustability | Fixed |
| Application | General Exhaust |
| Curb Height | 12 in |
| Curb Inside Length | 17.5 in |
| Curb Inside Width | 17 1/2 in |
| Curb Outside Length, Curb Outside Width | 20 1/2 in |
| Curb Shape | Square |
| Damper Tray Size | 15 in x 15 in |
| Features | Flashing Flange, One Welded Corner, Wood Nailer |
| Finish | Galvanized |
| Flashing Flange Width | 2 in |
| For Fan Base Size | 22 in |
| For Fan Type | Downblast Fans, Filtered Supply Fans, Upblast Fans |
| For Roof Type | Flat |
| For Use With | Flat Roofs Only |
| Includes | Damper Tray |
| Item | Roof Curb |
| Material | Steel |
| Metal Material Thickness | 18 ga |
| Overall Width | 24 1/2 in |
| Side Form | Straight Sided |
| Standards | UL 705 |
| Ventilation Type | Nonventilated |