Enhance the safety of your facility with the Red Dot S-1-RD wet location lamp holder cover. This cover is designed to fit over a 4 inch round box and is perfect for various lighting applications. The round design and 4 inch diameter make it easy to install and provides a sleek and professional look. Made for durability, this cover is constructed with high-quality materials that can withstand harsh weather conditions. Get your hands on the Red Dot S-1-RD now and ensure the safety of your facility with style.