Duct Size 4 in.
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Vista SN90 - UltraAIR Ventilation Fan - 90 CFM - 1.5 Sones - Duct Size 4 in. - White Color
This fan moves 90 cubic feet air per minute (90 CFM) at a low noise level 1.5 Sones. Recommend room size 85 sqf / 7.9 m2. Vista ultraAIR ventilation fans are designed to provide fresher and clear air for your room at very low energy consumption too.
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