Installation Guide
INSTALLATION INSTRUCTIONS
for Pre-Hung Exterior Entry Doors (JII106)
4
• Determine prior to 
installation what the 
actual nish oor 
height will be and 
adjust the rough 
opening if needed 
to accommodate a 
taller unit height. 
Most doors use a 
1-3/8" high threshold 
which provides 
adequate clearance 
in most applications. 
This ensures that the 
door does not drag 
on interior oors 
afterinstallation.
• Verify the door is 1" narrower and 3/4" shorter (1/2" each smaller if 
code requires) than the rough opening width/height. 90-minute re 
doors should be 1-1/4" narrower and 5/8" shorter. 
Verify Square, Level and Plumb
A
D
C
E
B
• Verify the rough opening is square. The (A) and (B) measurements 
should be the same. Maximum allowable deviation from square 
is1/4".
• Verify the rough opening is plumb (C, E and D). The maximum 
allowable deviation is 1/8".
• The rough opening sill must not be crowned or sagged (D), but rather 
be level or sloped (positive slope) to the exterior.
• 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 wood framed 
roughopenings.
• The header must be supported by trimmer studs.
FOR RETROFIT INSTALLATIONS
After removing the old door, remove sufcient cladding (siding, stucco, 
etc.) to expose enough intact building wrap to properly seal the door 
system to the opening. If damaged, apply new building wrap in shiplap 
manner. Verify the rough opening framing is structurally sound. Contact 
your local waste management entities for proper disposal or recycling 
of products being removed.
INSPECT ROUGH OPENING
2
6. For continuous 
slab, cut across the 
foldingline.
7. Fold the three back 
sides up to make a 
3-sided box, and, for 
step-down landings, 
fold the front 
apdown.
INSTALL SILL PAN
1. Set the sill pan in 
the rough opening, 
aligning the front 
edge (for continuous 
slab) or folded down 
edge (for step-down) 
with the exterior of 
the rough opening.
2. Mark a line across 
the front and back of 
the sill pan.
3. Apply three 3/8" 
beads of sealant 
between the lines. 
4. Place the sill pan in 
the rough opening. 
Firmly press the sill 
pan into the sealant 
with a J-roller.
The sill can be prepared using one of two methods: We recommend 
SureSill
™
 Sloped Sill Pan
™
 available from SureSill at www.suresill.com, 
building supply stores, and some manufacturing locations. As an 
alternative, a sill pan can be fabricated on site, by following the 
instructions below. If installing a SureSill
™
 sill pan, follow SureSill’s 
instructions for installation and skip to section 5 “PREPARE  
STUD-FRAMED WALL“.
JOBSITE FABRICATED SILL PAN
1. Cut a piece of sheet 
material to the 
length shown.
2. Lightly crease folding 
lines 1/2" in from the 
two short sides and 
one long side.
3. Measure the distance 
from the back of the 
trim to the interior 
edge of the sill and 
add 9/16".
4. Take this distance 
from the back edge 
and lightly crease a 
folding line across 
the sheet material.
5. For step-down 
landings, cut 1/2" 
in at this line on 
both sides of the 
sheetmaterial.
Sealant
INSTALL SILL PAN
3
Measure 
frame 
width
Interior
Continuous slab
Step-down
Fold sides and back up
Fold corner 
forward
Fold front 
ap down
½" ½"
½" ½"
Sill width 
+ 9/16"
Length of rough opening sill plus 1"
Folding line








