This is a set of clips to add a Plexiglas/Acrylic front door on your PowerSpec 3D X Dual Extruder Printer, FlashForge Creator X, or any other 3D printer with a 13.750" wide by 8.375" front hole. The plywood front is called 1/4" but technically measures 5.2mm (13/64") and the clips were sized to fit snugly. When printing ABS or Nylon, you need to remove drafts and control the temperature of the build environment. Adding the front door is one part of doing that. It also helps to keep the printer clean when it is not being used. The door clips are tight enough to fit and hold themselves on the printer, but are easily removed if desired. The door should be made of 1/8" thick Plexiglas (clear acrylic) available from the hardware store for a couple of dollars. Glass size: 9.5" x 15" The glass easily slides in and out from the top. It cuts down on noise coming out of the printer too. Let me know your results and if you find any other printers that these clips fit.