Waterway 1" Notched Air Control [1-5/8" HS, 2-3/4" FD] [White] (660-3570) bussfuses Older and application-specific heaters are

Older and application-specific heaters are useful because they help preserve original system fit in equipment that may not accept a later or more generic replacement without compromise

The dark grey Emerald Cut finish also helps maintain the visual style of the seat

Helps restore dependable sealing and motor-side protection

Its dependable design helps reduce erratic readings and supports long-term control system reliability

Waterway 1" Notched Air Control [1-5/8" HS, 2-3/4" FD] [White] (660-3570) bussfuses Older and application-specific heaters areThe Waterway 660 3570 notched air control is designed for compatible spa systems that use a 1 inch air control assembly with a 1 5 8 inch hole size and a 2 3 4 inch face diameter. Air controls like this give the user a way to adjust incoming air, which can change the feel, intensity, and character of the spa jet action. This white version is a strong choice for spas where a brighter, cleaner trim match matters. When an existing control becomes stiff,