Waterway 1" Notched Air Control [1-5/8" HS, 2-3/4" FD] [Black] (660-3571) sandfilters the improvement is noticeable in

the improvement is noticeable in how evenly the spa performs

Two jet systems often rely on simple controls

Performance-focused motors ensure dependable operation over time

Installing a properly matched replacement helps maximize pump lifespan and reliability

Waterway 1" Notched Air Control [1-5/8" HS, 2-3/4" FD] [Black] (660-3571) sandfilters the improvement is noticeable inThe Waterway 660 3571 notched air control is designed for compatible spa air systems and features a 1 5 8 inch hole size with a 2 3 4 inch face diameter in black. Air controls like this are used to manage the amount of air introduced into the system, helping fine tune the feel of the jets and the overall spa experience. The notched design is useful where the installation calls for that specific control style, and the black finish can be a good visual