About this itemAnti-clockwise nunversal fit: Exhaust Vent with 5.9" Diameter,Compatible with Portable Air Conditioners to Save Energy Our AC exhaust vent has an anti-clockwise thread direction so make sure to check this is correct for your AC before purchasing. The diameter of our AC hose is 5.9 inches which means it is most compatible with portable air conditioners on the market.Long lasting: The Air Conditioning Hose is made of strong, flexible polypropylene which makes it long lasting - withstanding any wear and tear without leaking. Keep your portable air conditioner in EXCELLENT CONDITION with our AC hose.Adjustable lenght: Keep the AC vent at its shortest length, 30cm, or fully extend it to 150cm. At home or in the office.