Material Science:It is made of durable materials, flame retardant, anti-corrosion and wear-resistant.Over length:The hose is retractable, can be extended, and can be freely retracted along the length of the exhaust pipe.Easy to install:Low friction loss,if installed correctly, there will be no air leakage. It is a perfect substitute for old or damaged portable air conditioning ventilation hoses.Durable and portable:This exhaust hose has good flexibility. This is a good choice when the necessary exhausthose breaks.Size:Suitable for most portable air conditioners with a diameter of 13cm/15cm (optional).be careful:Due to different display and lighting effects, the actual color may be slightly different from the imagePlease allow 1-3cm deviation dueto manual measurementstandard:Type: portable air conditioning exhaust pipeSize: Diameter: 13/15cm (optional)Length: 1.5minclude:1x portable air conditioning exhaust pipe