We supply 4" square covers of various types and specifications. Such as covers for square conduit boxes, plaster mud rings, tile covers, they are designed differently, we have flat, raised, industrial garvin covers, and they can be devideed to 2-1o gangs.
They are are used to mount switches, devices & receptacles within an electrical box. Angled mounting ears, or slots, allow for up to 12°of box misalignment.