Leviton 41290 DRW Fiber Storage Spacer Review

Superior quality and ease of use. FYI, make sure your pad matches the length/width of the extension, otherwise the edges of the pad will pop out and look weird. It still works, it just won't look perfect.

Smoother and more attractive. You can paint it, you can use caulk so that there is no visible seam between it and the wall. Offers plenty of space for large switches such as dimmers and sockets.

There are narrow, medium and wide wall boxes and if you are trying something thick like a decent dimmer or a Installing the motor control fan in a narrow box does not close the front panel flush with the wall. Too much space in the box. Unfortunately, most home builders use narrow or medium sized boxes in the home since the walls are typically only 4 to 5 inches thick and the boxes are cheaper. Without that "cheat" that closes the gap between the bezel and the box, there would be a visible gap.