Topaz C7517 Box Cover is a durable 4 in. square single gang device cover made from galvanized steel, designed for use with 4 in. square electrical boxes. This steel box cover is ideal for exposed work applications, providing a secure and reliable way to install electrical devices or cover wiring in junction boxes. The 4 in. square blank box cover allows for easy access when future conduit runs are needed, making it a practical choice for both residential and commercial projects. As a metal box cover, it offers strength and longevity, ensuring your electrical connections remain protected. The Topaz C7517 Box Cover is cULus listed and ROHS compliant, meeting important safety and environmental standards. Its square shape and sturdy steel construction make it suitable for a variety of electrical installations, including use as a 4 square junction box cover or a 4 ceiling box cover. With a piece count of 4 per package, this product is a convenient solution for multiple installations. Choose Topaz for dependable performance and straightforward installation in your next electrical project.