The leaf canister catches leaves before they clog up your pump skimmer basket. Easily installs in-between your automatic pool cleaner's hose. The leaf canister has a large capacity and it is easy to clean. With its unique t-trap connection, all vacuum hoses remain connected while the leaf canister is removed for quick and easy cleaning. The unit is made from clear u. V.-resistant materials so you can see when it needs emptying. If your pool is in an area with a lot of leaves, invest in a leaf canister today! Fits 1.5 inch hose