The Wall Control Pegboard 4in Deep x 16in Wide Pegboard Shelf Assembly for Wall Control's Pegboard and Slotted Tool Board is made from heavy duty 14 gauge steel and offers great pegboard shelf storage. Unlike most pegboard brands that fall short when it comes to shelving, Wall Control pegboard shelves are heavy-duty and up to the task with their solid construction and attractive finish. Wall Control Slotted Metal Pegboard Shelves and Supplies feature a scratch and rust resistant baked-on finish. These more secure and stable tool board accessories are for use with the slots found in Wall Control Metal Pegboard tool board panels only. Wall Control Slotted Tool board accessories offer a patented engagement that requires two deliberate motions up-and-down to engage and disengage the hooks. This feature makes Wall Control Slotted Pegboard accessories less likely to fall out of the tool board than conventional peg hooks that can easily fall off when tools are removed. Although Wall Control Metal Pegboard Panels will accept conventional 1/4in pegboard accessories as well as Wall Control Slotted Accessories the Slotted Secure Tool Board Shelf Assembly included here is only for use with Wall Control Metal Pegboard Panels and Tool Boards. Wall Control Pegboard Products are Made in the USA (1) Black 4in x 16in Pegboard Shelf Assembly for attachment to Wall Control pegboard tool boards. Wall Control Shelf Assemblies are not for use with Wall Control's 3in Tall Strip Panels. Wall Control Shelf Assemblies are ONLY compatible with Wall Control pegboard tool board panels.