Is there a 20 cm drain behind the toilet?

Generally, in this case, the person who buys the material will make a return air hole, which is normal.

A long time ago, I saw that there were 15 centimeters from the wall, because it was not easy to sell, now I basically can't see it, and now the market is 30 or 40 centimeters from the wall. I suggest that you punch the wall behind the toilet halfway through, so that you can install the toilet exactly 30 cm from the wall.

IN GENERAL, THE TOILET PIT DISTANCE IS DIVIDED INTO 305MM AND 400MM, YOUR HOME SEWER IS 20 CM AWAY FROM THE WALL, IT IS UNREASONABLE, THE TOILET PIT DISTANCE YOU BUY NOW IS ESTIMATED TO BE 305, BUT IT CAN BE SOLVED, THE EASIEST WAY IS TO INSTALL A SHIFTER, SEE IF YOU CAN BORROW IT, BUT THE SHIFTER IS ALWAYS A LITTLE BAD FOR THE SEWER, EASY TO CAUSE BLOCKAGE, AND IT IS NECESSARY TO RE-EXCAVATE OR ELEVATE, THERE IS A WAY TO CONNECT IT WITH A ROOT OF 50 PIPES, However, this is to knock off the tiles around the original sewer, make a slope, and connect it with a 50 pipe, I used to flush the toilet, and I have treated it with this method, so that there is no hidden danger of blockage, but it increases the momentum, but it is more annoying, don't chisel too much, and ensure that the bottom of the toilet is covered, so as not to affect the decorative effect. >>>More

Very rare, usually 40 or 50. Very few of the 60's.

The sideboard is 80 cm long, 20 cm wide and 110 cm high. Special size specifications, can be customized. Generally, within half a month, it can be customized.