The BB-18SS is a pre-drilled stainless steel backboard measuring 15 inches wide, 31 inches high. Backboard is provided for the SB-18SS, SB-18SSW, SB-18DSS*, SB-36SS*, and SB-36SSW* front entry enclosures for mounting of various types of equipment.
*SB-18DSS, SB-36SS and SB-36SSW come with two backboards.