Waterway 1" Notched Air Control [1-5/8" HS, 2-3/4" FD] [White] (660-3570) bussfuses The Hayward shoulder bolt is

The Hayward shoulder bolt is designed for compatible Duralite lighting applications where a specific mounting fastener needs replacement

This replacement is especially useful when the original discharge piece is cracked

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

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

The PMT series fit and OEM design give this basket practical value because skimmer baskets work best when they match the original housing shape and seating relationship closely

Waterway 1" Notched Air Control [1-5/8" HS, 2-3/4" FD] [White] (660-3570) bussfuses The Hayward shoulder bolt isThe 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,