Key benefits Saves space when not in use: collapsible, expandable design reduces storage footprint while providing full length when deployed. Quick, tool setup: installs in seconds so you can get your portable AC up and running without tools or technical skills. Durable and lowmaintenance: rugged construction resists heat, abrasion, and aging; waterproof for easy cleaning and longer service life. Features and performance Spacesaving expandable design: collapses down for compact storage and extends to full length during operation without losing airflow performance. Universal fit for standard portable ACs: fits standard 5.9inch (15 cm) diameter exhaust ports. Thread direction options: available in clockwise or counterclockwise thread directions—select the correct direction to match your portable air conditioner model before . Easy connection and extension: extend the hose end fully, then turn it in the matching thread direction onto your AC unit until it locks securely. Multiple hoses can be connected together for extra reach while maintaining a tight seal. Materials and durability: made from thick polypropylene (PP) plastic reinforced with steel wire for improved heat resistance, abrasion resistance, and antiaging properties compared with standard hoses. Simple cleaning: fully waterproof—wipe with a damp cloth or rinse directly with water. Compatibility and sizing Fits exhaust ports with a 5.9inch (15 cm) diameter. Choose clockwise or counterclockwise thread direction to match your portable air conditioner model. Verify thread direction before ordering. Typical use scenarios Apartment or bedroom: quickly route the portable AC exhaust to a window or dedicated vent without permanent modifications; collapse and store when the season ends. RVs and campers: extend the hose to reach exterior vents or window adapters; connect multiple hoses for longer runs while keeping a reliable seal. Temporary or mobile workspaces: use with portable air conditioners in workshops, home renovation sites, server closets, or event tents where flexible routing and easy storage are needed. What to expect Fast, tool installation in seconds. A tight, reliable seal when matched to your AC's thread direction. Longlasting performance due to reinforced construction and easy, waterproof cleaning. Before you Confirm your portable air conditioner has a 5.9inch (15 cm) exhaust port. Select the correct thread direction (clockwise or counterclockwise) to ensure compatibility with your AC model.