ws03 double-sided air inlet

1. appearance material: pvc frame, abs side plate and plug, sealing strips on both sides of ventilation fan blade, pvc hollow ventilation fan blade, black eva foaming on inner frame, with the characteristics of wear resistance, aging resistance and non-flammability.

2. relevant dimensions: opening size: 670 * 500 mm; inlet size: 730 * 560 mm.

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