System:3 Air Relief Valve and Gauge Kit filter-length_27 3/8 inches The Pro Series 300 features

The Pro Series 300 features a fully digital timer and refined dosing increments for more precise control

In water temperatures less than 70 degrees F

chrome plated bezel

This item is not for use on newer model Lift-Operator controlled lifts

This kit among 19 others have been granted NSF certification and are listed under NSF/ANSI 50 Equipment for Swimming Pools

System:3 Air Relief Valve and Gauge Kit filter-length_27 3/8 inches The Pro Series 300 featuresThis is a Pentair 24850 0105 Valve and Gauge Assembly Kit for Sta Rite System: 3 Modular Media SM Series Cartridge Filters, Sta Rite System: 3 SD Series D. E. Filters.