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FLEX-SILL
DOWNLOADS & INFORMATION
FLEX-SILL BROCHURE
FLEX-SILL WINDOW INSTALL GUIDE
CORNER BROCHURE
FLEX-SILL DOOR INSTALL GUIDE
FLEX-SILL SPECIFICATION SHEETS
FSW-46
FSC-3
FSD-46
FSC-6
INSTALLATION
WINDOWS & DOORS
1

WINDOW
DOOR

Measure rough opening width (A) and desired vertical return height (B) for each side.
Add all three measurements together to determine the length of Flex-Sill to be cut.
(A) + (B) + (B) = FLEX-SILL LENGTH
2

Make relief cuts on each end of Flex-Sill using (B) measurement. This will allow Flex-Sill to bend at corner of the rough opening.

NOTE:
Cut to line 1 for 2" x 6" sill
Cut to line 2 for 2" x 4" sill
3


WINDOW
DOOR
Fold along creased lines to form Flex-Sill.
4

WINDOW

DOOR
Install Flex-Sill pre-formed corners on each side of rough opening.
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NOTE:
Corners may be taped or stapled in place
5

WINDOW
Install Flex-Sill into rough opening and tape top of Flex-sill on each side.
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NOTE:
Corners may be taped or stapled in place

DOOR

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