Installation Instructions
WINDOW INSTALLATION—OPTIONAL (cont.)
4
PREPARE WINDOW
AMark the centerline of the stool. Measure from the centerline 133⁄8″ on both sides for the panel cuts.
B
Measure 123⁄8″ from the centerline on both sides for the sill support brackets.
Sill | Centerline | Sill | Centerline |
|
|
|
|
| |
| Outside |
|
| Outside |
3 | 3 ″ |
| 123⁄8″ | 123⁄8″ |
13 ⁄8″ | 13 ⁄8 |
|
|
|
Stool | Inside | Stool |
| Inside |
|
| |||
|
|
|
5INSTALL SILL SUPPORTS
AAssemble the sill supports. Do not fully tighten the spacer mounting screws at this time.
Type B 
Type E 
Spacer mounting
screws Type (A) Sill support 
Spacer Lock nut 
Adjusting bolt 
Large washer 
(for use with wood sills) 
CTurn 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 123⁄8″ marks. Drill pilot holes and attach the sill supports.
Average sill
Spacer
Sill support
Narrow sill
Offset sill (such as brick or stone)
BBefore 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.
Screws are in position
Sill support “V” notch
Inside Stool
SillBolt
Outside
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
•On wood sills use the large washer between the bolt head and the sill. This prevents the bolt from digging into the wood.
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