Punch-Free Vertical Window Exhaust Fan 35-160cm, Silent 5CM Retractable, 0-2800 RPM Adjustable Speed for Sliding & Casement Windows(13.78-15.75in)

Compatible with sliding windows: Designed specifically for sliding windows with an inner frame height of 13.78"-53" inch, featuring a 1.97-inch telescopic spring mechanism. Simply measure the vertical window frame for a precise fit.Drill-free installation: The telescopic spring frame has pre-drilled holes; simply extend it, insert it into the window frame, and tighten. Easy to install and remove, no drilling required, no damage to the window frame.Does not affect window opening/closing: The aluminum alloy frame and three-section structure firmly secure the window frame, allowing for smooth opening and closing of the sliding window after installation. It combines adaptability and stability.Multiple fan speeds: Quiet yet powerful exhaust with adjustable fan speed. Low speed for quiet nighttime operation, medium speed for daily ventilation, and high speed for rapid indoor air exchange.High-quality materials: Aluminum alloy body + bearings for smooth operation; double-sided stainless steel safety mesh prevents foreign objects from entering and protects children.

• Highly retractable design: Featuring a 5cm retractable structure, combined with three-section clamps and thickened springs, it securely locks onto the window frame, ensuring safe and stable ventilation without fear of shaking or falling off
• Compatible with most windows: Covering sizes from 35–135cm, compatible with most types of windows including vertical, horizontal, sliding, and casement windows, suitable for ventilation in homes, kitchens, and commercial spaces
• Drill-free quick installation: No tools or drilling required; quick and easy installation with a simple snap-on design; universal fit design does not damage the window structure and does not affect normal opening and closing
• Easy to disassemble and clean: Strong clamping device prevents falling off; simple installation, disassembly, washing, and dusting; supports left and right installation, flexibly adapting to different ventilation positions
• Powerful ventilation: Quickly removes smoke, odors, moisture, and heat; suitable for kitchen exhaust, pet deodorization, and home ventilation; compatible with both sliding and casement windows