The six open switch I use it in the bathroom is four screw holes, and the wire box is screw holes

If I'm not mistaken, your switch model and box should be different, right? The six of you are 120 type, your box is 86 type, the switch size is different, how to install it? The approach consists of two:

If you have strong hands-on ability, you can buy a 120 large dark fit, and then draw the size of the fit, and then use an angle machine to cut the tiles and knock out the box, because the panel is about a centimeter larger than the box around, so it will not affect the appearance. If you don't have the ability to do it yourself, then you can only buy a 120 surface-mounted fit, hit it directly on the wall, and screw it on. (Boxes of 120 are divided by size, 3 digits and less than 3 digits are small boxes, and 4 digits and more than 4 digits are large boxes).

The four screw holes are surface-mounted and the switches are distributed at the four corners, and the wire box is a concealed wire box, and the concealed switches are screwed in the middle of both sides of the switch. Your exposed outfit won't fit in. Either you go to change the concealed switch, or install the exposed installation directly on the wall, and there is a special lid cover wire box for sale.

When I want to install it concealmently, I remove a cover and attach it at any time.

I've seen holes in the four corners, but there are also holes on the left and right sides, whether they are blocked by the button board, generally the button board can be cut off.