Portable Air Conditioner Hose Adapter wide compatibility, fitting most standard portable AC exhaust hoses with inner diameter 5.12 inches and outer diameter 5.91 inches to meet your venting needs. Casement Window AC Vent Kit features a flat mouth design tailored for window seal venting scenarios, equipped with three pre-drilled mounting holes for secure, stable installation. This Air Conditioner Hose Adapter boasts a clear, logical structure that enables quick, hassle-free setup, helping build a reliable portable AC venting channel efficiently. The Crank out Window AC Vent Kit serves as a dedicated connection accessory, filling the gap between your portable AC exhaust hose and window to maintain consistent airflow. Made from sturdy gray plastic, the Portable AC Window Seal Kit resists wear and tear, ensuring long-lasting performance for regular use in indoor settings.