Barwalt Horseshoe Shims

By the photo they appear as a solid piece of plastic. But the back side of the black 1/8" spacer has a hollowed out recess. This would likely make cleaning more difficult. I don't think making them out of solid material would have required that much more material. the 1/16 are solid on both sides and so they appear like what is photo'd above regardless of which side it's viewed from.

Contractors Direct was the only online site that had 3/16in horseshoe spacers that I use.

quicker install than traditional spacers