Waterway Poly Jet Internal [4-3/16" FD] [Roto] [Deluxe Scallop] [White] (210-6190) marathonelectric and PIN20 compatibility give this

and PIN20 compatibility give this part practical value because replacement cartridges work best when they match the intended filter housing and service application closely

A properly selected replacement helps restore intended debris capture while preserving a cleaner

When the skimmer area starts showing age

The Hayward return-side insulation component is designed for compatible Low NOx heater applications where the original insulating section needs replacement

Waterway Poly Jet Internal [4-3/16" FD] [Roto] [Deluxe Scallop] [White] (210-6190) marathonelectric and PIN20 compatibility give thisThe Waterway 210 6190 Poly Jet internal is designed for compatible jet assemblies and features a 4 3 16 inch face diameter with roto action, deluxe scallop styling, and a white finish. An internal like this is useful because it combines a larger visible trim format with an active user facing jet pattern that helps restore the original feel of the assembly. The deluxe scalloped face gives this Waterway part a polished, premium look at the spa surface,