This part is a 6 1/4" Top Load Style filter Lid that is found on top off Waterway Pressurized filter housings.. This lid has a Thick O-Ring that seals the lid to the inside lip of the canister as well as a bleeder thumb screw with an o-ring that you use to bleeder the air out of the filter house after changing the filter or fresh water fill..
Note: This lid will crack in the center under the handle and leak.. Also Note the Large O-Ring and the bleeder thumb screw does not come with it..
