Installation Instructions
18
INSTALL SILL SUPPORTS
Assemble the sill supports. Do not fully tighten
the spacer mounting screws at this time.
Before attaching the sill supports, place them on
the window stool. Select the spacer position that
will place the spacer near the outermost point
on the sill. Tighten the spacer mounting screws.
Turn the bolts and tighten the lock nuts to make
the sill supports level or tilt down 1/8″ to the outside.
Line up the “V” notch with 12
3
⁄8″ marks. Drill pilot holes
and attach the sill supports.
NOTES:
• On narrow sills, there may not be enough room to use
the lock nut.
• A deep offset sill may require a longer adjusting bolt
than the standard hex-head bolt provided.
• On wood sills use the large washer between the bolt
head and the sill. This prevents the bolt from digging
into the wood.
PREPARE WINDOW
Mark the centerline of the stool. Measure from the
centerline 13
3
⁄8″ on both sides for the panel cuts.
Measure 12
3
⁄8″ from the centerline on both sides
for the sill support brackets.
4
A
B
WINDOW INSTALLATION—OPTIONAL (cont.)
Stool
Sill
13
3
⁄8″
Centerline
5
A
B
C
Sill support
Average sill
Narrow sill
Offset sill (such as brick or stone)
Spacer
Lock nut
Adjusting bolt
Large washer
(for use with wood sills)
Sill support
Spacer
Type B
Type E
Spacer mounting
screws Type (A)
Stool
Screws are in position
Sill support
“V” notch
Sill
Bolt
Stool
Sill
Outside
Outside
Inside
Inside
13
3
⁄8″
12
3
⁄8″
12
3
⁄8″
Centerline
Inside
Outside
