Exhaust Extension Hose Kit for Hobby Airbrush Spray Booth - Hose Extends up to 5.6 Feet (67 Inches) The long flat exhaust outlet can be press from both side of 25mm window gap or door gap. Durable and light weight. Smart and Free bend Hose. Help to draw the harmful gas out of door or window, and make the air in your studio more clean. After simple installation, the hose can be extended from 27-1/2 inch to 67 inch long. Push the flexible hose exhaust sleeve onto the base and tighten the hose clamp to keep it in place.