12" Shelf Bracket for Recessed Wall Standards. Use this 12" recessed shelf bracket with our 1/2" slot and 1" on center recessed wall standards. Recessed wall standards and recessed shelf brackets will help you to create a clean looking display in walls or in custom floor fixtures. Customers will see less fixture and more product! This recessed shelf bracket features a zinc finish. This bracket fits our Recessed Wall Standards 1/2" slot and spaced 1" on center only.