Adjustable inner panel hardware kit for use in the Allied Moulded AMXL403212L3PT fiberglass enclosure model. The corner panel kit should be sold with either of the P4032 white painted carbon steel back panel or PA4032 aluminum back panel for installation in the AMXL4032 enclosure. The corner pieces are molded in RAL 7035 light gray polycarbonate and include fastener hardware to install panels.