The 20 in. jumbo rectangular valve box is made with durable, long-lasting materials to provide you with years of worry-free protection for your valves. With a 3" mouse hole, users can install the box directly over pipes, creating a full enclosure around the valve or other critical system components. The overlapping lid protects valves from dirt, sand, and other debris that may damage or interfere with their performance. The built-in locking nut keeps the lid securely in place. Three different colors are available to help you match the box lid to your landscaping.