Features: -Designed for portable air conditioners with a duct diameter of 15cm. -Made of polypropylene and steel wire, good flexibility and durability. -The maximum length of this hose can be extended to 150/200/300cm. Specification: Color: white Material: PP Diameter: 15cm(5.9") Extension length: 150cm(59"), 200cm(79"), 300cm(118") Package Included: 1x Exhaust hose .