Master Flow Automatic Fan Shutter S30

LL Building Products Whole House Fan Shutter – 30″ – Interior Use – White S30

• One 35.75-in x 30.25-in replacement aluminum shutter (overall size)
• Replacement shutter for Master Flow 30BWHFS whole house fan
• White aluminum construction
• Noise and vibration are reduced with the help of felt-tipped louvers
• Can be used with belt or direct drive models
• Cut-out 33-3/4 in x 28-1/4 in
• 30.25-in x 35.75-in White Aluminum Whole House Fan Shutter

Features Injection molded frame with smooth aluminum louvers that automatically open when fan turns on, and close when fan turns off to keep out air, insects, and dust. Balanced shutters for complete automatic service free operation. Centers with 2 cut openings, 1 on each side of center joist per shutter model. Size: 30 in.