Close order tray measuring 80 x 40mm internal measurements. it is assumed that 20mm x 20mm bases will be used in this tray, There is provision for 0.5mm gap between each base, giving a total internal measurement of 83 x 42mmwith a 2.5mm ‘lip’ around the outside, giving a total external measurement of 88 x 47mm the blue squares in the image are for illustration only, the internal segment of this tray is blank. Cut from 2mm MDF bases with a 2mm top tray.