Specification
PRODUCT GUIDE
Interior & Exterior Doors (JPG013)
6
FRAME TWISTS
Attach two pieces of 
string to frame, corner 
to corner. If there is a 
gap between strings 
at center point larger 
than1/8",theframe
is not at. Repeat by 
switching strings and 
re-measuring.
PROPER SHIMMING
Measure width of 
frame at top, center, 
and bottom. If any 
two measurements 
differ more than 
1/16",theframe
is over or under 
shimmed. Repeat 
process and measure 
height of frame.
LEVEL AND PLUMB
For plumb, place level 
against each side jamb 
or use a plumb bob. 
For level, place level 
against head jamb 
and sill.
SQUARE
Measure frame from 
top left to bottom 
right corner and 
from top right to 
bottom left corner. If 
measurements differ 
by1/8",unitisout-of-
square.
PROPER DOOR INSTALLATION
LEVEL INDICATOR
Accurate measurements are essential in determining level and plumb. 
Most carpenters' levels have several bubble level indicators, making it 
possible to measure all parts of the door.
Examine the horizontal indicator. If the bubble is centered between the 
lines of the indicator, it is level.
If the bubble is not exactly centered, measure how far “out of level” or 
“out of plumb” by maneuvering the end of the level until the bubble is 
exactly centered. Measure the farthest gap between the level and the 
surface.Ona4'level(orlonger),thegapmustnotexceed1/4",orthe
surface is out of level/plumb.
Side jamb
Head jamb
Head jamb
Measure 
here
Proper installation is essential for keeping doors operating smoothly. If a door fails to operate properly, an inspection is necessary to determine if it was •
installed correctly.
A contractor or installer can assist in determining the cause of a door being “out of specication” and possibly correct it. Door problems due to •
improper installation are usually not covered by the manufacturer’s warranty. For installation instructions, contact us or your supplier.
The specications and measurements referenced in this guide are taken from ASTM E2112 Standard Practice for Installation of Exterior Windows, Doors •
and Skylights.
Note: These instructions do not address inspection for proper “water tightness” or ashing where the product integrates with the structure. A “water 
tight” inspection requires removal of the exterior siding and interior trim around the door. Seek professional assistance regarding this issue.









