How big the hole is left in the toilet drain hole of the floor slab

The diameter of the squatting toilet outlet is 10 cm, and the diameter of the toilet outlet is centimeter, which are all inner diameters, because they are handmade, so there are some deviations in the diameter of the water outlet.

Just seal it with cement! Wrap a layer of kraft paper around the holes and seal them with cement!

Now there are two outlets under the toilet, according to the distance of the sewer hole at home, choose which outlet to open, to install the toilet, the installation master will be based on the site situation or when you buy to recommend, or in the installation to give a choice!

When the installer installed this flush outlet, there was no U-shaped trap before intersecting with the main sewer pipe, resulting in a large amount of water being drained from other places when it was not time to drain to this flush outlet. >>>More

There's room for five centimeters at this distance, and you're still within the adjustable size of this size.