Removable slide-off cover and 4 cable pass-through openings in back panel Made from black powder-coated, 18-gauge cold rolled steel for durability 19-in. EIA 310D compliant Cable capacity (Fiber): 186 (based on 50% fill rate) Cable capacity (CAT-5E): 72 (based on 50% fill rate) Cable capacity (CAT-6): 46 (based on 50% fill rate) Cable capacity (CAT-6A): 25 (based on 50% fill rate) Dimensions: 1.75 in. H x 19 in. W x 2.68 in. D Includes mounting hardware