VAPOR BARRIERS FOR ELECTRICAL BOXES

摘要

A cover is provided for an electrical box, particularly when installed in an outside wall or in a ceiling, above which there is a cooler space. The cover extends around all of the electrical box except the open face thereof andhas a flexible flange around its perimeter which contacts and seals against the back surface of the wall or ceiling in which the box is mounted. The cover prevents cold air from entering the building through or around the box and heated air from escaping from the interior of the building which are disadvantages faced in electrical outlet box installations heretofore where no vapor barrier device is employed. The cover also prevents water or moisture from entering the box from the outside. The cover also can be specifically designed to receive particular shapes of electrical boxes including a plurality of boxes. There are spacing means for varying the distance the open face of the box extends beyond the slanted flange so as to accommodate walls or ceilings of different thicknesses. These spacing means include a curved portion of the cover connecting the flange to the main portion of the cover 90 that the curved portion can collapse in a bellows-like fashion when the wall is urged against the flange.