1U Rack Shelf for Three Beelink SER5

Generate a 1U parametric 3D-printable rack mount shelf for a standard 19-inch server rack that holds exactly three Beelink SER5 mini PCs sitting horizontally flat in a row.Exact Dimensions to Use:Single Beelink SER5 unit size: 126mm wide, 113mm deep, 42mm high.Total available 1U height allowance: 44.45mm.Total 19-inch rack inner width: 450mm between rails.Design Rules:Create three horizontal slide-in sleeves or bays tailored for the SER5. Make each bay 127mm wide and 42.5mm high to give a 1mm wiggle room tolerance.Do not include a solid bottom floor under the PCs to save height. Instead, use thin 2mm support ledges/lips along the bottom edges of each bay so the PCs sit securely without exceeding the 1U height limit.Space the three bays evenly, leaving a 15mm air gap between each PC compartment.In the interior divider walls of these gaps, punch a honeycomb ventilation grid so the Beelink side mesh intakes can pull fresh air.Add standard 1U rack ears on the far left and far right ends of the assembly, complete with standard oval mounting holes matched to 19-inch rack rail specifications.

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