Electrical Box for a Chinese 110/220v machine switch

I ordered electrical switches from Chinese web sites for use with woodworking equipment. It seems the switches won't mount in North American electrical boxes as the screws are slightly closer together. It's probably an asian or European standard.

I made this box with cut outs for wires, a spot to mount hold downs and a generous ledge around the top that allows me to drill a 1/8" hole where ever needed to mount the Chinese switch.

NOTE: These boxes are NOT going to pass any electrical inspe