Boxco BC-1525ST steel back panel is made for use with the Boxco 150 x 250, 160 x 260 and 170 x 270mm enclosures. Used for mounting accessories inside the enclosure. Measures 5.35" x 9.25" x 0.063" (136mm x 235mm x 1.6mm) Note: Image is for reference, actual product may differ