How do you open the cabinet door?
Use 35 wood opener for opening. From the door to both ends of 120 draw points, from side to side in 21 draw points, two points intersect is the center of the opening. After his side were 3 to 4 mm in width can be, all according to the door will increase the difficulty of being invisible. The size, cover, semi cover, inside, and the hinge are all available.
The opening depth is the most epithelial at the opening, lower than the door plane, no more than 2 mm, basically right. However, there is an individual hole opener that is too thick to use this method. No more novice hole to judge depth, need to open the hole with hinged combination.
If it is custom-made cabinet door, manufacturers have to open a good hole. But you need to specify the left and right door of the single fan to avoid opening the wrong hole, especially the door with the door or the handle.