Instructions / Assembly

Provide a flat, level, clean bearing surface so the sill may be
caulked and sealed to the opening.
Scrape, sand or fill as required.
A correct rough opening must be plumb, level and square.
Maximum tolerance is no greater than 1/8" with any of these
checks across the full width and height of opening.
Plumb should be checked for both:
• Right/Left plumb
• Inside/Outside plumb.
Fix any problems now!
Pro Tip:
A laser level makes this job easy and ensures accuracy.
Perform a String Test
String testing the rough opening is a good idea.
A string test is a simple procedure that assures your rough
opening is plumb and square.
1. Attach string diagonally across the opening
from the outside.
2. The string should cross in the center after it
is attached on all four sides of the frame.
3. The string should gently touch in the center.
A gap in the center indicates it is “tweaked”
or out of cross-sight. String should touch in
the center.
Flip string over itself to check both sides.
Always check both plumb measurements with a level.
Never simply “eyeball” your cross-sight. An out of cross-
sight condition is sometimes referred to as “tweaked”. This
is one of the most common reasons french doors leak.
Check and prepare rough opening
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