Feature: Durable and light weight. Smart and Free bend Hose. Easy to combine and use. 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. The long flat exhaust outlet can be press from both side of 25mm window gap or door gap. Can make the perfect effect to clean the air when combining with our spray booth to use. (The matchable spray booth is available in our store.)Installation Procedure: Take off 4 pcs screws as well as the fan protector on the back of your spray booth. Screw on the soft screw sleeve with extension hose, and connect the extension hose to exhaust port. Put the hose clamp on soft screw sleeve, and lock on the plastic sleeve. Extend the hose according to your requirement, and put the exhaust port out of window or door.Package Includes: 1x Plastic Sleeve 1x Softer Screw Sleeve 1x Hose Clamp 1x Extension Hose 1x Exhaust Port 1x Instruction