2Pcs Metal Blank Rack Mount Panel Spacer 1U 2U 3U Vented for 19" Server Cabinet

1u 19" 3/16 Heavy Duty Blank Panel Metal Rack Mount Filler spacer tan in color

1U-4U Vented Unvented Blank Rack Mount Panel Spacer 19" Network Server Cabinet

1U-4U Vented/Unvented Blank Rack Mount Panel Spacer 19"Network Server Cabinet

1U Blank Rack Mount Panel Spacer with Venting for 19in Server Rack Enclosure ...

Metal Blank Rack Mount Panel Spacer 1U 2U 3U 4U Vented for 19" Server Cabinet

2PCS 2U Blank Rack Mount Panel Spacer with Venting for 19'' Server Rack Enclosur