Reliable material Made from sturdy ABS plastic for durability and long service life in daily use. Compatibility Fits ventilation systems with an inner diameter of 130 mm and an outer diameter of 150 mm. Sealing efficiency Delivers a snug seal that minimizes leaks and blocks insects or debris, helping to maintain efficient cooling or heating performance. Easy to use design Features a common thread design for simple clockwise or counterclockwise connections and hassle installation. Specifications Material: ABS plastic Inner diameter: 130 mm Outer diameter: 150 mm Thread: standard/common thread Use scenarios Portable air conditioner setups in homes: connect to a window vent kit to exhaust hot air outside while maintaining a secure, leak seal. Workshop or garage ventilation: adapt to standard ducts to vent cooled or heated air without drafts or gaps. RVs and campers: secure connections between hoses and ducts for reliable climate control on the go.