6 Pack Electrical Box Covers: These metal electrical box covers protect electrical boxes and junction boxes to prevent accidental electric shocks from children and pets. Widely Suitable: These electrical box covers are square with 4 inch sides, suitable for most electrical boxes. The square blanking plate is ideal for 4" electrical boxes, and the angled mounting slots compensate for misalignments up to 12". High-quality metal materials: These metal electrical box covers are made of galvanized sheet iron sturdy, sturdy and durable, waterproof and rustproof, flame retardant, high temperature resistant, colorfast and reusable, making them economical and practical. Easy to Install: These electrical box covers are extremely easy to use. Simply place them over the hole and install them by tightening the screws into the junction box. Junction box covers are perfect for covering defects such as cracks or flaws, or simply for covering electrical boxes that are in use or not.