-Easy installation for replacing damaged portable air conditioner exhaust hose. <BR> <BR> Exhaust hose fits to various portable air conditioner models as long as you are using same 5" diameter hose. Note* THIS IS NOT 5.9" <BR> The connector has 5 inch/ 13 cm in diameter. <P> Specifications and installation. <BR> 1. The diameter of hose is about 5 inch/ 13 cm (outer edge to outer edge), please make sure the size is compatible to your portable air conditioner models before you purchase; fits most indoor portable air conditioner units. <BR><BR> 2. The thread of this exhaust hose is counterclockwise. To connect simple screw in with a counter-clockwise motion (lefty hand twist tight to mounting point. <BR><BR> 3. Extendable hose stretches and shrinks freely: strengthened by strong steel wire, the shortened length is 12.6 inch/ 32 cm, it can extend up to 59 inch/ 150 cm. <BR><BR> Easily extend the length of the exhaust hose by hand and to attach to existing hose mount on air conditioner. <BR> Shape hose as necessary and line up with the both ends, A/C output and window mount. It's that easy to install. <BR><BR> 4. When installing, please ensure firm fit of counter-clockwise rotation. Make sure the hose has a tight seal for reliable airflow, and energy saving. <BR><BR> 5. Hose is constructed from polypropylene with good flexible, durable and portable, this is a good replacement when the essential vent hose has cracked.