Hayward 175 Sq. Ft. Star-Clear Plus Cartridge Filter | W3C17502 backwash kits There are 5 holes strategically

There are 5 holes strategically placed along the hinge when looking at the backside of the Weir Assembly

and reliability you'd expect in a Pentair pool heater

depending upon the needs of your pool

Pentair 3‑Way PVC Diverter Valve | SKU 263028

Hayward 175 Sq. Ft. Star-Clear Plus Cartridge Filter | W3C17502 backwash kits There are 5 holes strategicallyStarClear Plus single element cartridge filters offer excellent quality, value, and convenience. Features: No backwashing requirement saves hundreds of gallons of water and money per year. Constructed of the most durable materials for the toughest applications and environmental conditions Single locking knob securely fastens head to filter tank, eliminating bolts or clamps Long lasting, extra large cartridge element with precision engineered core