Boxco BC-1520ST steel back panel is made for use with the Boxco 150 x 200, 160 x 210, and 170 x 220mm enclosures. Used for mounting accessories inside the enclosure. Measures 5.35" x 7.32" x 0.063" (135.9mm x 186mm x 1.6mm). Note: Image is for reference, actual product may differ