Feature: Compatible Installation Walls: The room to room fan is compatible with wall thicknesses ranging from 3.5in to 6.3in, making it suitable for installation between the walls of your bedroom, living room, bathroom, garage, laundry, storage room,and more Dual Airflow Adjustment: Install this in wall fan between your living room and bedroom to adjust airflow direction. The enduring AC motor operates at ≤46dB, ensuring quiet performance all day without disturbing your activities or sleep Rapid Ventilation: With a high speed of 1440 r/min and powerful performance, this wall vent fan delivers a maximum airflow of up to 180 CFM, meeting the ventilation needs of spaces like the living room, bedroom, and laundry room How to Install: The indoor ventilation fan’s panel features pre-drilled holes, enabling you to mark the wall for drilling and installation based on hole diameter Versatile Use: This through wall fan is suitable for installation in areas requiring ventilation, such as the living room, bedroom, study, and more. To prolong the lifespan, it is recommended to avoid outdoor use and minimize exposure to rain Package Content 1 x Wall Vent Fan 1 x Main Unit 1 x Back Cover 8 x Plastic Expansion Screws 8 x M4 x 25 Large Flat-Head Self-Tapping Screws 1 x Adapter 2 x Installation Hole Locator Plates 1 x User Manual