kohler shower drain installation

[dkkll]

installing a k-9135/k-9136 drain in my new shower
the rough in guide does not state the size of the whole to be cut in the subfloor
i am not sure if the flange is supposed to sit on the bottom of the 4 screw bases or on the rim around the flange

[cacher_chick]

Kohler Drain

[hj]

The top of the "flange" is even with, or slightly below, the subfloor/mortar preslope. Then the safety membrane is laid onto the sloped mortar base and clamps between the two pieces, usually with a bead of silicone to make a better seal.

[cwhyu2]

And it is always good to bevel the sub floor to fit the shower drain.Not just a hole cut in the sub floor.