Cedar planks are great for the outdoors, they do not rot and are flea deterrent. The standard planks are a milled 1" thick by 8" wide. Milled wood is slightly smaller than the measurements given.
Wood is priced and provided with all the appropriate hardware for shelving.
Brackets, hardware, and screws included.
Shelves longer than 66" get 3 brackets (one on each end and another in the middle for support. Shelves equal to or less than 66" get 2 brackets (one on each end.)
8" wood is nominal 1x8 = Actual size is 7.25" x 0.875". 1x12 is 11.25" x 0.875"