Waterway Econo Eyeball Fitting [1" Insider] [2-1/8" FD] [White] (400-9180) defilters and FC-9875 reference give this

and FC-9875 reference give this part practical value because DE grid assemblies work best when the replacement matches the original size and internal port orientation closely

When an existing feeder is aging

and overall system coordination

A properly selected Jacuzzi jet contributes to more dependable water delivery and a cleaner visual match in the bath surface

Useful for smoother branch routing than a standard tee

Waterway Econo Eyeball Fitting [1" Insider] [2-1/8" FD] [White] (400-9180) defilters and FC-9875 reference give thisThe Waterway 400 9180 Econo eyeball fitting is designed for compatible 1 inch insider return applications and features a 2 1 8 inch face diameter with a white finish. Eyeball fittings like this are useful because they help direct return flow while also contributing to the finished appearance of the fitting at the wall. The Econo format makes this a practical choice for installations where dependable function and straightforward replacement matter