This invention relates to electrical junction box covers for temporary use during application of drywall and other finish work. Electrical junction boxes include any type of electrical outlet or switch box, including communication boxes for cable, Ethernet, phone, or any other related system. The covers of the invention prevent debris from entering the electrical junction boxes during the application of drywall and finish work. The covers protect electrical and data cabling and provide substantial efficiencies in construction of residential and commercial structures.