Side panels and weight-distribution shelves provide interior mounting flexibility and support installing heavy equipment in non-metallic, polycarbonate Stahlin enclosures. The panels allow components to be mounted on enclosure walls (either on the long or short side), and provide added mounting, enabling smaller enclosures in tight spaces. They’re easy to install with common tools, and are available in nine SKUs for enclosures from 6 x 6 in. to 24 x 24 in. Corrosion-resistant, slot-nut hardware is included. The thick, lightweight, aluminum shelves are supported by an enclosure’s sidewalls, which reduces risk of deflection of the enclosure bottom due to increased weight. They’re available in seven SKUs for enclosures sizes from 10 x 10 in. to 24 x 24 in., and are easy install using built-in t-slots.