Therma-Tru SHOP 3 Door Preparation - U1 Revised - Manual (Page 19)

Door
Preparation
Shop 3 2014 (U1 REVISED) 3.19
Lock Preparation
(Except 90 Minute Steel Fire Door)
Mark for Lock Preparation
Preparation shown is for standard cylindrical lock sets.
For mortise locks and other types use manufacturer's
templates and instructions.
.172” Deep
at center
Backset
2.375” or 2.750”
Crossbore
Diameter
2.125”
Edge bore
Diameter
1”
CAUTION:
Due to stile width and lite placement, some
door styles have restrictions on lock crossbore
and backset. Using the DOOR STYLE
manual, (paperback or web site), see if
restrictions apply. Deadbolt locations
and sizes vary.
.250” R.
(Mortise using
a .500” dia. bit.)
1.016”
NOTE:
If cutting second prep for deadbolt, spacing should be 7”
maximum for Fiber-Classic, Smooth-Star and Steel doors.
No restriction applies for Classic-Craft doors.
6/6 & 6/8 - 43.969”
8/0 - 59.969”
Lock
Center
Top
Edge
Deadbolt
Spacing
(see note
at left)
2.266”
NOTE:
See 90-Minute Steel
Fire Door Lock Preparation.