Hayward Insulation, Low NOx, Return Side (FDXLGSK1933) pvcfittings The R-series fit

The R-series fit

Improves air-side performance confidence and perceived quality

The dark grey Emerald Cut style adds a more refined visual element than a plain functional insert alone

Helps create a cleaner and more organized connection layout

A reverse flow flapper helps support directional control within a pump-related flow path

Hayward Insulation, Low NOx, Return Side (FDXLGSK1933) pvcfittings The R-series fitThe Hayward return side insulation component is designed for compatible Low NOx heater applications where the original insulating section needs replacement. A part like this is useful because it helps support thermal management and protect surrounding heater areas as part of the overall assembly. This replacement is especially useful when the original insulation is deteriorated, damaged, missing, or no longer presenting well after service. Replacing