Tecmark Overlay [Digital Command 4 Btn] (30191BM) jacuzziwhirlpool A diffuser like this is

A diffuser like this is useful because it helps manage water movement inside the wet end and supports the hydraulic relationship between the impeller and surrounding housing

1-1/2 inch size and 4-position design support intended fit

Matching the correct 11 PSI switch helps preserve the intended protective logic and operating behavior of the supported heater

heavy-duty feel that aligns well with premium rebuild work

Tecmark Overlay [Digital Command 4 Btn] (30191BM) jacuzziwhirlpool A diffuser like this isTecmark Overlay [Digital Command 4 Btn] (30191BM) is a replacement topside panel overlay designed for spa control panels that need a clean, readable control face. This overlay helps refresh the appearance of the control area while keeping button labels and command positions easier to identify during normal spa operation. Topside overlays are important service parts because worn, cracked, faded, or peeling labels can make a spa panel harder to use and