What are the two holes in the wall of the bathroom in the rough room for?

The two-hole fan should be used to remove odor and moisture in the bathroom. But the most common one is a three-prong socket.

There are holes in the wall of the embryo room, which are generally as follows: >>>More

There are two possibilities.

1。The extra switch is the one that controls the exhaust air. The extra thread may also be the exhaust line. >>>More

Before the developer delivers the house, it should have done the waterproofing of the bathroom and kitchen, done the "24-hour closed water test" and passed the inspection, so that such a house can be said to be "the project inspection and qualified" in principle; Therefore, after you finish laying the pipelines of water and circuits, you should first do the waterproof construction of the original waterproof construction before preparing to "level" the ground and wall and plaster the cement mortar. As for how to do it, the waterproof material is to use a certain waterproof colloidal material (according to the price, local customary use of varieties, the location and situation of the mechanism that needs to be waterproofed, etc.) and the "pure cement" (generally 425 or 525 cement) without yellow sand mixed according to the specified proportion, and then mix with clean water to the "consistency" suitable for construction, carefully paint the construction surface that needs to be waterproof, and then do the relevant "closed water test" after 24 hours of completion. Other construction on the ground.

The international standard is 300 or 400, of course, there are also non-standard domestic ones, such as 350, 500, etc., the distance is according to the thickness of your wall tiles, you have to ask the decoration master, add 300 or 400 to the thickness.