Hinoki ofuro already comes pre-assembled but it can be easily customized on site by your contractor.

13 - DRAIN
The standard solution is a rubber plug with chain. It might be not the slickest design but it is safe, standard and easy to use. We can supply 2 types of drain fitting (see here to the right) More stilish alternatives include stainless plugs button operated but this require coordination on site. You are welcome to find a better drain from a plumber near you. Remember that hinoki planks can be 33mm or 42mm thick.
The drain can be directly connected to the plumbing or can discharge into the waterproof pan.

14 - DRAIN FITTING
We can install the drain or if you feel uncomfortable to decide a location now, we can provide you the fitting and have you drill the hole on site. This allows for precise coordination with the site and last minute change of mind. Since the planks are made of solid wood, it will be an easy job for your carpenter. Location: consider that if you have the drain in the middle of the tub, there is no place to attach the chain to. Also, it might be easily stepped on when entering the tub.

15 - SHORT TYPE
Short type fitting ends with a brass nut. Discharge is uncostrained and is applied usually when there is a waterproof pan (under the tub) and then towards a floor drain. Please find here an enlarged detail of the fitting. See also a scale drawing here.

16 - LONG TYPE
Long type ends in a female socket (50mm, thread 1 1/2") so you can connect it to the drain. This socket is not longer than the thickness of the batten, so it will not reach the floor, even if you do not connect it to the drain pipe. See a detailed photo here. See also a scale drawing.