| Fixed or Adjustable Dimensions | Adjustable Width |
| Flange Width, Flange Width (In.) | 2 in |
| For Use With | Intake or Exhaust Applications |
| Frame Depth | 4 in |
| Inside Height, Inside Height (In.), Inside Width, Rough Opening Height, Rough Opening Width | 36 in |
| Intake Louver Inside Width | 36 in to 48 in |
| Intake Louver Outside Height, Minimum Outside Width, Outside Height, Outside Width | 40 in |
| Item | 40"H 40"W Non-Drnbl Alu Intake Louver |
| Louver Free Area | 3.570 to 4.790 sq ft |
| Louver Item | Stationary Intake Louver |
| Louver Type | Fixed Height, Adjustable Width |
| Maximum Outside Width | 52 in |
| Min. Wall Opening (H x W) | 36 in x 36 in |
| Min. Wall Opening (In.) | 36H x 36W |
| Mounting Hole Size (In.) | 9/32 x 1/2 |
| Outside Width (In.) | 40 to 52 |
