Instructions / Assembly

Rough

Opening

Height

Rough

Opening

Width

7. Check Rough Opening

• Check dimension of rough opening for correct size.

• Check sill plate for level. Sill must be level, shim sill

plate if necessary.

• Check rough opening for plumb and level. If rough

opening is not plumb or level, correct as necessary.

• Check rough opening for square by measuring

diagonally, upper left to lower right and upper right

to lower left corner. If measurements are within 1/8",

opening is square. If rough opening is not square,

correct as necessary.

• Slide Aluminum Sill Support onto the aluminum Sill

from one end. DO NOT secure with screws until siding

or exterior ﬁnish is applied over sheathing.

6. Apply Optional Aluminum Sill Support if Required

Sill support must be used whenever support is

needed under projecting outer edge of Sill. Support

entire length of Sill to prevent product damage.

Optional

Aluminum

Sill Support*

Optional Aluminum Exterior Sill Extension and Sill

Support must be applied before frame is installed.

Masonry/Concrete Construction

Standard Construction

Exterior

Interior

Optional

Aluminum

Sill Support

Sill

*Shown installed.

Exterior View

Sill

Level

Diagonal

Measurements

Frame Assembly and Installation Guide