Neck fix for pool filter grids

I had broken necks on a couple of grids for a Hayward ProGrid 60 sqft pool filter, so I made this fix. In the pictures you can see a grid with one side of the neck broken off, a grid prepped for the fix (by cutting off the remaining side of the broken neck), and a grid with the fix inserted. The neck part is 1.25" O.D. and 1" I.D. The insertion sleeve is 1" O.D. to mate with the I.D. of the grid neck/tube.

The .stl's include two versions, and two sizes of each: First version neck is 1" long;