Usage Tips:4-Types Exhaust-Hose For Portable Air Conditioner AC Vent Adapter Connector Se Specifications: xMaterial: PP xDiameter: 15cm or 5.91 "(Approx.) xOptional Types: (As Pictures Show) Type 1 connector is a 1.5 hp mobile air conditioner body and exhaust pipe connector. Type 2 connector is a 1 and 1.5 hp mobile air conditioner exhaust pipe and baffle connector. Type 3 connector is a 1 hp mobile air conditioning body and exhaust pipe connectorthe square size is 15x11.6CM. Type 4 connector compatible with type 5 connector. Type 5 connector is used for embedding in the wall after opening the wall, with a cover. xMade of high quality material, durable and practical to use xPortable, Durable, Easy to Install, Portable Air Conditioner Accessories xSuitable for: All portable air conditioning and exhaust hoses with an outlet diameter of 15 cm (6 inches). xFor connecting the exhaust hose and casement kit plate. Reminder: Please check whether the product size and model are consistent before purchasing Package Contents: 1 Exhaust Duct Interface Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.