Specifications: Designed for portable air conditioner with 15cm/5.91" hose in diameter. It can be connected to the exhaust hose, easy to install and remove. Made of premium material, durable and convenient for cleaning. Item Name: Exhaust Duct Interface Material: ABS Type: Round L/F Series, Square C/H Series (Optional) Compatible Models: [Round L/F Series] for KY-20/LA, for KY-25/L, for KY-26/F1, for KYR-26/F1, for KY-35/F1, for KYR-35/F1, for KY-26/F2, for KYR-26/F2, for KY-35/F2, for KYR-35/F2, etc [Square C/H Series] for KY-25/C, for KYR-25/C, for KY-32/C, for KYR-32/C, for KY-25/H, for KYR-25/H, for KY-32/H, for KYR-32/H, etc Features: Portable, Durable, Easy to Install, Portable Air Conditioner Accessories Diameter: 15cm/5.91" (Approx.) Notes: Please confirm whether you can use it on your machine before purchase. Before purchasing, the required diameter must be measured (according to the outside diameter). Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Exhaust Duct Interface