The NDS STANDARD SERIES 6½" round valve boxes and covers are injection molded of structural foam polyolefin material with a melt index between 10-12. Coloring and UV stabilizers are added, along with processing lubricants when needed. The 6½" round cover shall have an average thickness of .187".
6½" Lid For 7 Inch Valve box
Overlapping covers prevent dirt and grass from settling between body and cover
UV inhibitors prevent discoloration and deterioration; such as cracking or blistering
Covers are identified with ICV (Trrigation Control Valve) designation, unless otherwise specified