Add to Cart Quick view Waterway 2 Top Load Filter 50 sq ft 502-5010 Hydro Air RRP: Now: $256.23 RRP: $307.48 Waterway 2 Top Load Filter 50 sq ft 502-5010 This is a complete top load filter assembly The diameter of the hole in the niche for this canister is 6-7/8" Replaces 1-FA-TL2S50F , 319741 , 4668-13 ,... RRP: Now: $256.23 RRP: $307.48 Add to Cart Quick view