Change out a damaged cover or replace a missing one with the 10 in. Round Standard Series Valve Box Cover. This durable overlapping lid fits onto a 10 in. Round Standard Series Valve Box and prevents debris from entering the box. The brown cover is designed for durability with structural reinforcing ribs. Marking for "IRRIGATION CONTROL VALVE" is molded onto the lid to identify components inside the box. The bayonet twist-lock cover features two finger indentations for easy removal. This irrigation box cover is made of high-density polyethylene (HDPE) treated with UV inhibitors.