Installation Guide
INSTALLATION INSTRUCTIONS
for Interior Pre-Hung Doors
2
2
INSPECT ROUGH OPENING
• Verify the width and 
height of the door 
frame are each 1/2" 
smaller than the rough 
opening width/height.
• Verify the rough 
opening is square. 
The (A) and (B) 
measurements should 
be the same. Maximum 
allowable deviation 
from square is 1/4".
• Verify the rough opening is level and plumb (C) and (D). The 
maximum allowable deviation is 1/8".
• The rough opening sill must not be crowned or sagged (D).
• The exterior face of the rough opening must be in a single plane (E) 
with less than 1/8" twist from corner to corner.
• Minimum double studs should be used at all rough openings.
• The header must be supported by trimmer studs.
Do not install the door unless the rough opening meets the above 
conditions. Professional assistance may be necessary to correct problems 
before installation.
IMPORTANT! The door should be finished either before installation or 
immediately after (whichever is more convenient). Note! If removing 
the slab from the frame for nishing, remove hinges from the jamb 
only, do not remove hinges from the slab.
A
B
D
C
E
Verify Square, Level, & Plumb
MATERIALS AND TOOLS
1
REMOVE PACKAGING AND INSPECT DOOR
REMOVE PACKAGING
Remove shipping materials such as corner covers, shipping blocks 
or pads. 
Note! Be sure to remove the shipping clips or screws through the 
header into the slab from the door before beginning the installation.
INSPECT DOOR
• Cosmetic damage
• Product squareness (diagonal measurements must be within 
1/4" difference)
• Correct product (size, color, grid pattern, handing, glazing, energy-
efficiency requirements, etc.)
• Correct Handing. To determine door swing (left or right), face the 
door from the side where hinges cannot be seen. Right handed doors 
open to the right, while left handed doors open to the left.
If any of the above conditions represent a concern, do not install the 
door. Contact your dealer or distributor for recommendations.
PROVIDED MATERIALS
• Two color matched #9 x 2 1/2" screws (for securing the top two hinges 
into framing). Applies only to solid core, custom carved and stile and 
rail doors.
NEEDED MATERIALS
Note! Follow all material manufacturers’ instructions for proper use 
and compatibility.
• 10d Finish nails
• 4d Finish nails
• Shims
• Wood putty
• Sandpaper
• Finishing materials
• 100% polyurethane sealant (for 
two piece frames)
NEEDED TOOLS
• Hammer
• Tape measure
• Utility knife
• Level (4 ft. minimum 
recommended)
• Circular saw or jigsaw (for 
trimming jambs if necessary)
• Nail punch
• Screwdrivers



