Installation Instructions

Field Stacking – Adding Transom (cont.) – 2 Wide Only

IMPORTANT: Improper placement of

sealant may result in transom leakage.

IMPORTANT

For All Mull/Stack Installs

– Caulk Units –

IMPORTANT: High-quality, exterior,

neutral-cure, clear, silicone sealant (compatible

with vinyl extrusion) is to be used for all

procedures in the following instructions which

call for caulking or sealant.

1. Apply a continuous bead of sealant on the top of

the door’s head frame and on the bottom of the

transom’s sill where the nailing fins have been

removed (FIGURE 4).

2. Place the units in the position that they will be

assembled and clamp tightly together.

NOTE: Clamps are an assembly aid and should be

removed before installing the stacked unit

into the structure.

3. Use a level to align door and transom. Ensure

units line up vertically and horizontally on both

sides (FIGURE 5).

4. Use a metal bracket (FIGURE 6), an interior

installation clip is shown, to secure the transom to

the door. Apply bracket to door and transom with

#8 x 1/2" long Phillips head sheet metal screws.

NOTE: Maintain alignment of door and transom as

brackets are attached.

5. Work back and forth between door and transom

side of bracket until screws are placed in all the

holes (FIGURE 7).

6. Wipe off any excess caulk with a shop towel

dampened with denatured alcohol.

FIGURE 4

FIGURE 5

FIGURE 6

FIGURE 7