The Schaefer Non-Motorized Air Intake Shutters, designed for aerodynamic efficiency, are constructed of white exterior grade PVC. Corners are heated and fused together for strength and durability. Nylon bearings will not corrode nor need lubrication. Use as a non-motorized intake under proper static pressure.
Technical Specifications
Additional Information
| Model | Size | Rough-in Size |
|---|---|---|
| PS12 | 12 in. | 12 1/ Sq. |
| PS16 | 16 in. | 16 Sq. |
| PS18 | 18 in. | 18 in. Sq. |
| PS20 | 20 in. | 20 in. Sq. |
| PS24 | 24 in. | 24 in. Sq. |
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