- Frame Material
- Extruded Aluminum
- Blade Material
- Extruded Aluminum
- Blade Orientation
- Parallel
- Duct Shape
- Rectangular / Square
- Air Flow Direction
- Horizontal
- Counterweight Location
- Internal
- - 45
- 1/2" x 1/2" x .063 Aluminum Screen (Removable)
- - 40
- Standard Screen in Removable Frame
- - 42
- 18 x 16 Mesh Aluminum Insect Screen (Removable)
- - 43
- 18 x 16 Mesh Bronze Insect Screen (Removable)
- - 44
- 1/2" x 1/2" x 16 Gauge S.S. Screen (Removable)
- - 47
- 1/2" x 1/2" x 19 Gauge PV C Coated Birdscreen
- - 48
- 18 x 14 Mesh Stainless Steel Insect Screen
- - 89
- Sleeve up to 16" deep , .18 ga galv. , Specify depth in comments (Min. list $70)