High quality thickened PP materialThis portable air conditioner tube is beloved steel wire, and harder than materials on the market, stable and not easy to deform and heat dissipation, corrosion resistant, industry standard also for the home - suitable for temperatures from -20°C to +70°C. Universal Compatibility the portable air conditioner hose is suitable for all kinds of portable air conditioner models , range hood, dryer.use the same hose Easy to install Extend the purchased portable air conditioner hose to the required length, align it with the connecting hose, snap it into place, twist the pipe counterclockwise to fix it, please feel free to contact us before installation. Can be spliced and stretchedIf the length of the air vent pipe is not enough, you can seamlessly join two 1.5m/2m to expand it to 3m/4m.