Window Requirements
NOTE: All supporting parts should be secured to firm wood, masonry, or metal.
1. This unit is designed for installation in standard double hung windows with actual opening widths of
22" to 36". The upper and lower sash must open sufficiently to allow a clear vertical opening of 13"
from the bottom of the sash to the window stool.
2.If storm window presents interference, fasten a 2" wide wood strip to the inner window sill across
the full width of the sill. The wood strip should be thick enough to raise the height of the window sill
so that the unit can be installed without interference by the storm window frame.
See Fig. 5-2. Top of wood strip should be approximately 3/4" higher than the storm window frame
(STORM WINDOW FRAME) or wood strip (OUTDOORS) to help condensation to drain properly to
the outside.
3. Install a second wood strip (approximately 6" long by 1
the center of the outer sill flush against the back off the inner sill. This will raise the L bracket as
shown Fig. 5-2.
4. If the distance between STORM WINDOW FRAME and WOOD STRIP MOUNTED ON TOP OF
INNER SILL is more than 1", two of wood strips are not necessary.
INNER
SILL
INDOORS
Fig. 5-1
Installation
HARDWARE
TYPE A: 11EA
(SHORT SCREW)
TYPE D: 1EA
(SEAL STRIP)
(Adhesive backed)
WOOD STRIP MOUNTED
ON TOP OF INNER SILL
INNER
SILL
OUTER
SILL
OUTDOORS
INDOORS
TYPE B: 4EA
(WOOD SCREW)
TYPE E: 1EA
(SASH SEAL)
(Not adhesive backed)
8
1
/
" wide and same thickness as first strip) in
2
1" MAX.
WOOD STRIP
FOR L BRACKET
Fig. 5-2
TYPE C: 3EA
("L" BRACKET)
TYPE F: 2EA
(GUIDE PANEL)
3/4"
CLEARANCE
STORM
WINDOW
FRAME
OUTER
SILL
OUTDOORS
DRAIN PIPE