Window Fitters Guide to Window Installation 
109                ©2022 AWDI, LLC Do not reproduce without permission
Flush Mount
When there is no Brickmould or
Flange/Fin, the door is usually 
set into a wood surround, or buck.
This is common for replacement 
wood doors, and aluminum sliding
patio doors.
Flange Mount.
Clad Wood Doors and most
Aluminum Sliding Doors have a
frontal flange that rests against the
exterior. When the flange projects 
1-1/2” out from the frame, it is usu-
ally a nailing flange. If it projects less
than 1”, it is a flange to help estab-
lish a water barrier on the outside.
The flange can be set back, (“J”
channel) to allow installing siding
flush to the exterior face of the door.
There are three basic types of frame assemblies in order to
mount doors to various types of wall construction. 
While the Brickmould Frame and the Flange Frame are
designed to have the front of the frame rest outside the wall
and cavity, the Flush Mount (often called Pocket Frame)
where the frame sits inside the cavity, is commonly used,
as well.
The Flush Mount is the preferred choice for replacement
applications and for mounting on wood surrounds or buck
installation. Small “frontal flanges” are used in masonry 
applications.
Check the factory recommended frame for the intended
application.
The details shown on these pages and in the basic installa-
tion details that follow are common. Situations may vary,
and frame components may vary as well. The illustrations
below don’t have exterior siding or other finish applied.
Brickmould
Most Wood. Fiber Glass, and even
Steel Entry Doors have a brickmould
exterior. The Brickmould trim acts as
a “mounting flange” and is how the
door rests and seals against the 
exterior face of the wall. 
Different Types of Door Frames
SAMPLE MANUAL

View this content as a flipbook by clicking here.