Brass Shower floor drain mounting in pan

[Hunter2]

I have a Sterling Accord center drain shower with the higher base about 21 " on the sides and back, the front is 3.5 inch high. I just did the demo and it seems the PVC from the floor is to short, its 3/4" under the height of floor. There is an open hole around the drain, it seems they didn't fill it in when the original one installed so I can get to it. I have a Plumbest Brass drain, which looks just like the Oatey 4". How high should the plastic pipe stick out of floor or should it be level with floor? It seems its about an 1" low. Please advise on proper height and best way to fix this. The tolerances are pretty tight so I am using furring strips and shims to get the drain to line up where it should be. Thanks for any help.

 

[Hunter2]

Any help? In short how far up inside the brass drain should the 2 in PVC go up? I thought I read 1.25 in. Any help would be appreciated. Thanks

 

[Sponsor]

 

[Dj2]

In a proper installation, you will put this part or similar to fill in the gap between your 2" riser off the floor and your brass drain set, therefor the riser should reach just below where the strainer sits :
PROFLO Single Drain Gasket for Shower Receptor
Model FSBGSKT

 

[Dj2]

You can find a similar gasket at HD (sold by Oatey).