[INCREASE COOLING PERFORMANCE] Enjoy a cooler environment in thanks to OBTAIN Portable Air Conditioner Vent Kit OBTIAN seal is made of waterproof and heat insulation fabrics, It can blocks the return flow of warm air, so that your mobile air conditioning unit can be more efficient and cools your room in less time.[Adjustable Size]Portable air conditioner adjustable kit. You can adjust the length according to your needs. adjustable range is 35-60inch, suitable for single/double-hung windows of 35-60inch and sliding windows of 35-60inch in height, and suitable for hoses of different sizes.[Wide Application]It is not only suitable for portable air conditioners, also suitable for exhaust of ,dryers, exhaust clothes dryers and dehumidifiers.[EASY TO INSTALL]You 't need to buy a hose adapter or other additional tools, You only need a OBTION seal to solve it perfectly.Simply apply the adhesive tape to the inside of your frame and to the itself. Attach the seal to the tape. Then put the air conditioner hose into the seal. Finally, tighten the drawstring. Simple as it is.[Premium Material ]Made of environmentally friendly waterproof coated fabric.With - zipper,it has very good adhesion leaves no trace after tearing off and can effectively block the hot air outside.size: 92 x 25cmMaterial: clothcolour: WhitePackage Contents:1 x Seal ClothOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.