Admiral S15-S20 Lock Down Skimmer Lid and Ring Seat - White filter-width_16 1/2 inches This back-up ring goes inside

This back-up ring goes inside the tank and is used on filters manufactured after 3/03

This Stenner chemical pump #85MJL5A4STAA provides reliable chemical feeding for your swimming pool

The Big Horn is perfect for both competition and recreation pools

This kit includes a fluid-resistant isolation gown

Ends are made of the highest quality plastic resins and are designed for years or problem free use

Admiral S15-S20 Lock Down Skimmer Lid and Ring Seat - White filter-width_16 1/2 inches This back-up ring goes insideThis is a Pentair Replacement White Lock Down Style Complete Lid Ring Seat for Admiral S15 S20 Wedge Skimmers.