For single gang regular switches and outlets they work GREAT. For triple gang you just do the two on the outside. For double gang you have to cut one of the plates because they're too wide.
They are a little tough to slide around the big body of Zooz smart switches but they do fit. Barely.
I'm extremely happy with the results. The depth they set the device to is perfect for Lutron Claro wall plates. I even use the device leveling plates on things that weren't loose, because of the consistent look.
I might have to give that a try. I have a few boxes that sink into wall when I try to screw in the switch and it DRIVES ME CRAZY. I would be willing to have one that is 1/4" thick if it came w/ appropriate cover to bring all of these deep smart switches out to better fit in gang box.
It was an accident. The ones I got are thicker than the Raco, at least according to their listed measurements. Not sure if thicker is better or not. In a couple spots I did have to put a screwdriver on it and tap with a hammer to "sink" the leveling plate into the drywall a little bit. This was to fix a gap it left. Note that my walls are knockdown, not smooth.
Wuno Shop 30 Pcs Wall Plate Spacer,Metal Single Gang Device Leveler,Flush Fit Leveling Plate,Outlet Shims, Device Level Plates for Use with Electrical Boxes and Receptacles,Steel