I-Semble 54877 Installation Instructions Manual page 5

Back
All measurements are for 3/4'' thick board.
DRILLING GUIDE
7
9 16 "
Bottom
The holes should be 3/8" in
diameter and 1/2" deep for
threaded inserts.
Front
15
6 16 "
1
3 8 "
*See full sized template in product box.
5