VEVOR 7.5-Inch Room to Room Fan, 2-in-1 305 CFM Through Wall Fan with Remote Control & Two-Way Airflow, 10-Speed Ventilation Quiet Vent for Kitchen, Living & Laundry Room WorkshopRapid Air ExchangeInstallation GuidelinesYear-Round ComfortQuiet OperationVersatile ApplicationReliable UseAirflow Direction Adjustment: Bi-Directional Adjustable, Programmable Turning,Maximum Airflow (CFM): 305 CFM (Rated),Item Dimensions (L x W x H): 10.12 x 10.12 x 4.61 inch / 257 x 257 x 117mm (Min. Extension),Control Method: Remote Control + Buttons,Color: White,Noise (dB): ≤46dB (Measured at 1 Meter),Speed (r/min): 1750 r/min,Fan Diameter: 7.48 inch / 190 mm,Temperature Control: -14℉ to 212℉ / -10℃ to 100℃,Voltage Frequency: AC120V 60Hz,Item Model Number: BT-RTR08-LCD,Wall Thickness Compatibility: 3.5-6.3 inch / 90-160 mm,Speed Levels: 10-Speed Settings,Net Weight: 3.92 lbs / 1.78 kg,Power: 10W,Main Material: Front and Rear Panels: ABS Plastic, Vent Pipe: SPCC Metal