When i could not find a direct replacement Switch i Made this adapter to fit a newer switch to a old pizza warmer display box. The Opening on the warmer measured around 38mm x 20mm (The actual measurements was 1 1/2in x 13/16in). I made the new switch opening 28mm x 14mm. I made this adapter to snap in place on the warmer and the new switch also snapped into place. The switch i used was a Gardner-Bender GSW-42.  Printed with PETG 20% infill. I added the fusion 360 file.