Pentair Large Stainless Steel Niches Sealing Ring, Large Niche (White) || 79200255 Bio-Dex Algaecide it withstands the high pressures

it withstands the high pressures exerted by pop-up systems

Easy installation — restores reliable flow control

Compresses and channels water flow to increase impeller speed at reduced flow rates

40% larger vacuum intake for maximum debris removal via the Large Vacuum Inlet

Use a fine mesh bag liner inside the basket to catch smaller debris

Pentair Large Stainless Steel Niches Sealing Ring, Large Niche (White) || 79200255 Bio-Dex Algaecide it withstands the high pressuresPentair Large Stainless Steel Niches Sealing Ring, Large Niche (White) 79200255 The White 10 Hole Sealing Ring is made for Large Stainless Steel Vinyl Fiberglass Niches. Large and small stainless steel niches for swimming pools and spas are formed with brass fittings made to house Pentair pool lights. Replacement gasket provides a water tight seal to protect your lighting.