The 10 clear whole house housing sump fits on Pentek, Culligan, Ametek, Kleen-Plus, US Filter, and American Plumber housings. The 10 clear sump may not fit on other brands. The 10 clear housing sump should be changed at least every 5 years. The 10 clear housing sump fits 10 standard caps for clear housings with any inlet/outlet size. the 10 clear canister holds 10 L x 2.5 W water filters. The Pentek 153128 clear whole house housing sump is the replacement sump for the Culligan HF-360 and the Culligan HF-160. Sumps do not come with an o-ring.