Waterway Knob [1/2" Air Ctl A Style Scal] (662-1900) is a Waterway Plastics air control knob for compatible spa and bath air control assemblies. It provides a clean replacement when the original knob is cracked, faded, missing, or difficult to grip during normal use.Air control knobs help users adjust air mixing at the jet system, fine tuning the feel of the water flow. Match part number 662-1900, knob style, color, and control design to the existing Waterway assembly. Replacement knob for compatible Waterway air control assemblies Helps restore easy adjustment of air flow at the spa or bath Useful for replacing worn, discolored, cracked, or missing knobs Supports a cleaner finished appearance around the control area Verify style, color, and part number before installation
![Waterway Knob [1/2" Air Ctl A Style Scal] (662-1900)](https://cdn.shopify.com/s/files/1/1751/9347/files/662-1900_XL.jpg?v=1778020966&width=480)
