Actually you would have a double plate at the top = 3" +
92 5/8"= 95 5/8" + 1 1/2" for the sill plate = 97 1/8" -
1/2" ceiling plaster board = 96 5/8" giving you 5/8"
wiggle room for your 8' wall board installation.

DG


Denny G
Sandwich, IL