HP 380584-B21 - 41U cabinet joiner kit (Blue) - Includes hardware needed to attach two 41U cabinets together Retail
HP 380584-B22 - 41U cabinet joiner kit (Opal) - Includes hardware needed to attach two 41U cabinets together Retail
HP J1513B - Tie kit for Rack System/E33 or U33 - Used to attach two E33 or U33 cabinets together Retail