This part is a Hydro Air 1" Top Draw Air Control Stem Assembly only, which is made to screw into the air control body. The stem measures about 2 5/8" Across the top and the threaded hole this would screw in would be about 1 3/8" Wide. The shaft from the bottom of the lid would be about 2 1/2".. See attached photos..
| Manufacturer | HydroAir/Balboa |
| Air Control Part Type | Stem |
| Top Draw Style | 1" |
