Various
Openings Can
be Created
When Old
Windows are
Removed
Old Wood Window –
Removing the old sash
and parting stops or
aluminum track leaves
a perfect opening for a
“pocket Install” from
inside or out.
Finned Window –
Common mount for 
residential windows 
of wood or pvc. When
removed, and the inte-
rior wall board and sill
remain, then the new
window will need to fit
to the old trim or
mount on top of the sill
and beneath the header
and filled accordingly.
Old Aluminum 
Window – New win-
dows can be mounted
on top of the old frame
if left intact, or butted
to the interior finish if
removed. Removing the
interior trim will allow
all options for install.
Old Steel Window –
Most common in brick
veneer buildings or
other masonry applica-
tions. Leaving the old
frame in, the new win-
dow needs to mount
butting the frame or on
top. 
Totally removing the
frame requires some
work to patch, but
allows most any type 
of new window to be
installed.
Window Fitters Guide to Window Installation 
27               ©2022 AWDI, LLC Do not reproduce without permission
Sash Removed.
Perfect for 
Pocket Install
Full Frame
Removed to
Rough Opening
Removing the
Sash & Glass
Panel leaves 2”
space to the
Outside.
Old Wood Window
Old Aluminum Window
Old Steel Window
Old Finned Window
Full Frame
Removed. Finished
Head & Sill
Removed
Removing Sash &
Glass Panels
leaves the 
2-3/4” Frame
Full Frame
Removed
leaves 2-3/4”
space
Finished Sill
and Finished Head
Removed
Removing the
Sash and Glass
Panels leaves the
2” Frame
Full Frame
Removed
Finished Sill and
Finished Head
Removed
SAMPLE MANUAL

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