In-Rack Enclosure Solutions FRM-RM-12X 12 panels, 7.0″H x 17″W x 14.0″D Rack Mount 4RU in height fixed master panel with integrated horizontal and vertical jumper guides. FRM-1RU-2X-TX-DOT 12 panels, 1.72″H x 12.25″W x 7.68″D (excluding brackets) Rack Mount 1RU in height made for a 19″ or 23″ rack width. Features slide-off cover, 2 fixed bulkhead positions, and 2 captive grommets for cable entry. FRM-1RU-2X-TX-DOT-S 16 panels, 1.72″H x 12.25″W x 7.68″D (excluding brackets) Rack Mount 1RU in height made for a 19″ or 23″ rack width. Features slide-off cover, 2 fixed bulkhead positions, and 2 captive grommets for cable entry.