When making your own trough the area where the drain will be needs to be recessed, a standard drain can be used, and the recess should be of significant depth that the drain top is at the height of your trough bottom. This applies to either wood or concrete sub-floors, a minimum of 2” from drain flange edge to recess should be maintained. 8” wide X 6” deep X length needed is a standard formula.
Trough Drains
