VEVOR 7.5-Inch Room to Room Fan, Through Wall Fan with AC Motor & Bi-directional Adjustable Wind, 180 CFM Ventilation Quiet Exhaust Vent for Kitchen, Living & Laundry Room, WorkshopRapid Air ExchangeInstallation GuidelinesYear-Round ComfortQuiet OperationVersatile ApplicationReliable UseAirflow Direction Adjustment: Bi-directional Adjustable, Button Control,Maximum Airflow (CFM): 180 CFM,Item Dimensions (L x W x H): 10.12 x 10.12 x 4.61 inch / 257 x 257 x 117 mm (Min. Extension),Color: White,Noise (dB): ≤46dB (Measured at 1 Meter),Speed (r/min): 1440 r/min,Fan Diameter: 7.48 inch / 190 mm,Temperature Control: None,Voltage Frequency: AC120V 60Hz,Item Model Number: BT-RTR08-DCG,Wall Thickness Compatibility: 3.5-6.3 Inch / 90-160 mm,Net Weight: 3.31 lbs / 1.5 kg,Power: 6W,Main Material: Plastic ABS