I bought a kit shelving unit with drawers. One slide was missing. I ordered one on Amazon to find it the wrong size. So I decided to just print it. It is 10mm wide 252mm long and 1.7 thick walls. It has a ridge 7mm high. The holes are 192 mm apart and the leading hole is 20mm from the edge. I have included a merged STL for the holes cut. The 3mf has negative shapes to move and resize to meet your needs. The holes are 4.2mm wide.