Standard tray footprint is 200mm x 70mm with a usable volume of 200mm x 60mm x 20mm.
Mini tray is the same except for a 160mm length and closer screw holes to fit within Prusa mini and Bambu A1 mini build envelope.

Screw mount version uses (4) #8 flat-head screws per tray. No supports required.

Double sided tape version has tracks for ¼" 3M VHB strips. Supports required on build plate only

Print settings should be pretty forgiving as long as you use a decent wall thickness. I used a 0.6 nozzle, 0.2 layer height, 2 perimeters, and 25% cubic infill with ASA. If you're using PLA, you may need to shrink the clips slightly along the long axis to get a tight snap fit on the posts.