A temporary protective cover which can be removably attached to a plaster ring which can be removably mounted onto an electrical box having an open front end includes a plate sized and shaped to be removably mounted onto the plaster ring, a pair of wings formed onto the plate for removably securing the cover onto the plaster ring and a pair of posts formed onto the plate for removably securing the cover onto the plaster ring. Each wing is shaped to include a flexible leg and a pair of feet one at each end of the wing. The posts are shaped and sized to be press fit into bores on the plaster ring. In use, the wings and the posts both serve to removably secure the cover to the plaster ring.