Complete Waterway pressurized top-loading filtration system featuring 2" slip glue-in connections on both sides with approximately 2 3/8" inside diameter measurements. Engineered for recessed niche installation where the main housing sits beneath the spa shell while the upper section remains accessible from above. This comprehensive filter assembly arrives with niche lock ring for securing the housing to the installation niche, lid lock ring for top closure, 50 sq. ft. filtration cartridge, and cover without bromine feeder tube included.
Required niche opening diameter for canister installation: 6-7/8"