31.5-33.5 Inch Vertical Window Exhaust Fan for Sliding Windows Γ Align with Window Top and Bottom Inner Frames Tool-Free With Variable Speed for Bedrooms Smoky Spaces Hot Areas-Exhaust Only

MEASURE BEFORE PURCHASEThis vertical window fan is designed specifically for sliding windows, requiring an inner frame height of 31.5"to 33.5". Please measure the vertical window frame space (not the glass height) for a perfect fit. Not compatible with windows outside this height range. | SLIDING WINDOW EXHAUST FANPowerful exhaust solution for sliding windows. For exhaust use only not designed to cool or draw in fresh air. Featuring a sturdy aluminum frame, it installs tool-free and efficiently expels heat, smoke, smells, and humidity from pet areas, cigar lounges, and enclosed spaces. | 30-SECOND TOOL-FREE INSTALLATIONGet your household window fan set up in under a minute. Just extend the spring-loaded frame, insert it for a vertical installation on your sliding window, and tighten. Its easily removed with zero window damage, perfect for quick bedroom or kitchen ventilation. | SLIM-DESIGN NO WINDOW INTERFERENCEEnjoy optimal household airflow without sacrifice. Our slim window ventilation fan installs flush, preserving full window function. It features 5 high-performance fans behind a sturdy stainless steel mesh, perfect for bedroom and kitchen odor removal. | FLEXIBLE AIRFLOWAdjust airflow from gentle breeze to powerful flow with a stepless speed controller. Ideal for multi-scenario use in apartments, home offices, workshops, and chicken coops, providing reversible airflow year-round. | IMPORTANT REMINDER1> Size Guide: Please check the product dimensions before ordering. Will not fit if window size is outside this range. 2> Troubleshooting: Most non-working or loose fan guard issues can be quickly fixed with our troubleshooting video. 3> Support: Contact seller for any problems. We will provide a prompt and timely solution within 24 hours.