ACCESSIBILITY Create accessible storage anywhere by taking advantage of your building’s own vertical structure — with virtually no limitations on placement, or length of shelf. Adjustable to your environment: The Post-Rack bracket is secured by 6 points of contact to the post and has a variable “grip” that fits upright posts from 3.25” to 6.25” wide, this accommodates 3-Ply, 4-Ply, 4”x 6” and 6”x 6” posts.