Designed for Specific Ducting with 5.1/5.9 Inches Diameter Portable Air Conditioner. This portable ac window kit Design Compatible with a Portable Air Conditioner Vent Hose with 5.1 inch or 5.9 inch' Diameter Exhaust. Reminder: If your ventilation hose is used for a long time, it may be deformed or damaged, it is recommended to replace your ventilation hose with a new one to avoid installation failure Good Sealing: The frame of our products is uniquely designed to better fit your window and minimize the space between it and the window. We also provide sealing tape to improve sealing. Materials: Slide Kit For Portable Air Conditioner Is Made Of PVC Materials, Light Weight Portable Easy To Install And Removal, Suit For Using In Home Or Office. Increase Cooling Performance: The window sealing plate isolates the hot air, prevents the hot air from returning, keeps the room cool, and effectively reduces power consumption. Material: plastic colour: White Package Contents: 1 x Air Conditioning Parts Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.