Installation Instructions
a
)
All Mastercraft doors are set up with a 2-1/8" 
bore hole set at either a 2-3/8" or a 2-¾" 
backset (depending on door size). All crossbores are 
set for a 1" drivepoint latch. This is done to allow 
installers to utilize drive point latch systems, radius 
plate systems, or square plate systems.
b
)
To install the backset as a drivepoint system, 
simply follow the lock manufacturers instructions 
for converting to a drivepoint. Hammer the drive-
point into place making sure the angled portion 
of the backset faces the jamb 
(
fig.30
)
.
c
)
Using the manufacturers instructions, install the 
lockset 
(
fig.31
)
.
d
)
Your double door unit will arrive with strike 
plates pre-installed on the astragal. Depending on 
the installation of the door unit, these plates can 
be adjusted using a #2 phillips screwdriver. Loosen 
the plates and slide them up or down as needed
(
fig.32
)
.
NOTE: If you are changing your strike plate for a 
different nish or style, adjust screwdriver torque  
setting accordingly to prevent screw head damage.
PREHUNG DOUBLE EXTERIOR DOOR
a
)
 Close the door unit and re-
check the margin around the door 
unit, it should be even horizontally 
across the top of the header and 
vertically from the header to the 
sill. Make adjustments to the shim-
ming as needed. 
(
fig.18
)
. 
a
)
 Place 3 shims across the head of the door 
unit. Make sure not to over-shim the head of the 
unit or it will interfere with the margin across the 
top of the door. Open both doors and hold back 
the weather strip.
(
fig.21
)
. Install one 2-1/2" 
drywall screw into the head and through each of 
the shim locations. Screw holes can be filled for a 
more finished look.
b
)
 If your prehung unit has an adjustable sill: Using a 
#2 phillips screw driver, adjust the set screws on the 
top of the sill crown to allow your door to operate 
properly 
(
fig.19
)
. A good test for the compression of 
the sweep on the sill crown is to 1.) Close the door on 
a piece of paper. 2.) Pull the paper from between the 
sweep and the threshold 
(
fig.20
)
.  
If the paper tears, the threshold is adjusted too high 
and it will prematurely wear out the sweep. If there is 
no tension on the paper, then there will be potential 
for water leakage.
10
)
 Installing the Lockset
7
)
 Fasten the Head Jamb
8
)
 Adjusting the Frame
9
)
 Install Astragal
g. 19
g. 21
g. 20
g. 27
g. 29
g. 26
g. 28
g. 31 g. 32g. 30
g. 18
a
)
 Double door units are equipped with an astragal that acts 
as a stop for your active door. This astragal is supplied with 
head and foot pins that secure your unit in a fixed position 
when the pin is extended. You will need to drill a hole into the 
frame head and sill for these pins to operate. 
To locate where your pins will set into the frame, put a dot of 
white paint on the end of the pin 
(
fig.22
)
. Swing the door 
to the closed position and extend the pins out, marking spots 
on the sill and header 
(
fig.23
)
. Drill a 15/32" hole into 
the sill crown 
(
fig.24
) 
and a second 11/32" hole into your 
header. Finish using silicone adhesive to secure plastic sleeve 
(
fig.25
) 
into the sill crown. 
b
)
 A strike plate will need to be mortised into the head of 
the frame. First apply the strike plate centered over the hole 
you just drilled 
(
fig.26
)
. Next using a utility knife, score 
around the edges of the plate 
(
fig.27
)
. Remove the plate and 
use a chisel to remove the desired amount of wood 
(
fig.28
)
. 
Re-apply the plate and secure with screws 
(
fig.29
)
.
g. 22
g. 24
g. 23
g. 25




