PresAir Trol Gunite Air Button [1-1/4" HS, 1-1/2" FD] [White] (B340WA) insiders A lateral is one of

A lateral is one of the internal filter parts that helps support proper water distribution in a sand filter

Installed in the proper suction setup

This OEM DE grid is a practical service part for maintaining compatible ST40 and ST50 filter systems with the right size internal element

and this Grundfos version is a single-speed 0

When an injector becomes worn

PresAir Trol Gunite Air Button [1-1/4" HS, 1-1/2" FD] [White] (B340WA) insiders A lateral is one ofThe PresAir Trol gunite air button in white is designed for compatible installations using a 1 1 4 inch hole size and 1 1 2 inch face diameter. In gunite style applications, choosing the right button format helps preserve both fit and finished appearance at the control point. This version is especially useful when the original button has cracked, discolored, or no longer feels dependable during use. Replacing it can freshen the look of the