NDS STANDARD RECTANGULAR OVERLAPPING COVER ONLY:
The NDS STANDARD SERIES 14" x 19" rectangular valve box's overlapping covers prevent dirt and grass from settling between body and cover. UV inhibitors are added to prevent discoloration and deterioration; such as cracking or blistering.
- Injection molded of recycled polyolefin material with a melt
index between 10-12.
- Coloring and UV stabilizers are added, along with processing lubricants when needed.
- The cover seat shall have 16 structural ribs on the underside of the seat, each with a minimum thickness of .250"
- The 14" x 19" cover shall have a average thickness of .250"