Flexible design: widely used by 98% of air conditioners on the market and suitable for all portable air conditioners up to 5.9 in diameter. Innovative style: the PVC clamp rail can be changed because it can be adapted to different sliding windows in the vertical and horizontal direction. Flexibility of use: the 6.3 wide telescopic bucket is easy to install and the bucket has an adjustable size between 17 and 55 . Quality assured: made of lightweight and durable PVC, easy to install and remove, it saves space when not in use. Energy efficiency and reliability : The windows of the mobile air conditioning system are sealed with exhaust ducts to prevent hot air from exiting and entering, increasing the efficiency of the unit. Specifications.< /p> Name: Air conditioning exhaust pipe fittings Material: PVC Height: approx. 43-140 cm / 17-55 in (retractable) Weight: about 1000g Packing: polypropylne bag Application scenario: General air conditioning accessories Installation: 1. Connect the exhaust pipe and the baffle joint 2. Insert the prepared screws into the holes of the hard baffle. 3. Adjust the baffle plate to the required length 4. attach the baffle plate to the window, install the baffle plate, then connect the baffle spacer and exhaust pipe to the baffle plate. Checklist. 4x baffle plate< /p> 1x 150mm connector 4x baffle screws