The empty slot cover RLA8000 is used to "reserve slots in. 19 - cover support frame in the empty space cover can also EMERGENCY STOP button or external devices installed to realize their own special functions in the same design (External devices can be installed by us) dimensions of the blank slot cover. RLA8000: width 8 TE = 40.5 mm - Height 3 U = 129 mm Contents: 1 piece front panel and empty plate and 2 pieces thumbscrews.