Each fixture is supplied with a perforated plaster ring
that gets mounted to the aperture for the application of drywall compound.
We recommend that you use two to three wraps of electrical tape to cover the terminal screws of receptacles and switches when you're installing them inside a metal extension ring (shown) or onto a metal plaster ring
. Both of these narrow the box opening and increase the likelihood that the terminal screws could inadvertently contact the metal sides, cause arcing and start a fire.
A plaster ring
attaches to the front of the box, allowing a clean plaster edge around the outlet.
Eatons B-Line series mounting brackets are Underwriters Laboratories (UL) listed for the United States and Canada, and support most standard boxes with plaster rings
measuring 4-inch square, 4-11/16-inch square, 5-inch square, and multi-gang electrical boxes with plaster rings
While the system's decorator-style switches look identical to standard wired switches, they can be installed into junction boxes or plaster rings
, or flush mounted to any surface with screws, tape or even adhesive.