Patent ID: 7523837

Claim:
An installation device for plumbing elements, comprising: a flush-mounting box that has an open front having an edge, the flush-mounting box having side walls extending from the edge to a base, wherein protruding eyes extend radially outwardly on an outer surface of the side walls adjacent to the base for affixing the flush-mounting box at the base, the mounting box further comprising fittings for installing plumbing elements within the flush-mounting box, said fittings including apertures in the side walls, a flange on an outside of the box, plural means on the box for fastening the flange to the box at a selectably variable distance rearwardly back from the edge at the open front, wherein the plural means on the box for fastening the flange to the box comprise a plurality of grooves on an outside of the side walls of the box, spaced back at different distances from the edge of the open front of the box, and the flange is fastenable on the outside of the box by inward protrusions on the flange that engage with a selected one of the grooves for selectably setting a distance of the flange back from the edge.