Available off the shelf, lightweight and sturdyFlat PCB trays hold up to 25 cards for storage and transport at manual workstations. Will hold virtually any PCB size. Are made of conductive material, temperature rated up to 176O F. Four rails of slots 0.63” center to center will hold cards up to .12" thick. Slots are .3" deep. Trays can be fixed side-by-side for longer PCB panels.