Choose from zinc or black. Recessed Wall Standard - 6'L, 11/16" Lip, 1/2" slots spaced 1" on center. This 1/8" thick recessed wall standard features 1/2" slots, 1" on center, as well as an 11/16" lip, which fits 5/8" thick material such as drywall. Recessed wall standards are a great option for creating a clean custom look for your perimeter or custom sales floor fixtures. This recessed standard uses 1/2" Slot Recessed Standard Hardware only. For compatible recessed standard hardware, see our Recessed Hardware 1/2" Slot. Priced and sold 5 recessed standards per carton.