Installation Guide

ManualsBrandsMasonite ManualsDoor Jamb KitsEntry Door Frame Extender (Common: 36-in x 80-in; Actual: 36-in x 80-in)

JAMB

EXTENDER KIT

This extender kit is designed to work with Masonite

3-0 x 6-8 (36" x 80") and smaller inswing and out

swing door systems. The kit will extend the frame

and sill from a 4-9/16" wall condition to 6-9/16".

IMPORTANT: This extender kit must be installed

prior to installing the door system in the opening.

Completely read these instructions before

installing the Jamb Extender Kit. Some door

units are heavy and require a 2 person lift. Always

work safely with tools and wear proper personal

protection equipment.

TOOLS REQUIRED:

u Claw hammer

u Tape measure

u Pliers

u 10D ﬁnishing nails

u Wood saw and hack saw

(suitable for cutting

aluminum if installing kit on a door smaller than 36")

u Premium paintable exterior grade caulk

KIT INCLUDES:

u Left jamb Extender

u Right Jamb Extender

u Head Jamb Extender

u Aluminum Sill Extender

STEP 6 – REATTACHING BRICKMOLD

(IF NEEDED)

With the extender kit properly installed, the

brickmold can be attached prior to installing

the door unit in the opening or attached after

the unit is installed.

Align all three pieces of brickmold to ensure

proper ﬁt of the miter corners. When properly

positioned (1/2" reveal from inside edge of

frame) secure the brickmold to the extended

jamb using seven 10D ﬁnishing nails evenly

spaced per side and four across the top piece

of brickmold. If brickmold is being attached

prior to installing the unit the miters can be

cross nailed as shown in FIGURE D.

FIGURE D

STEP 7 – FILL AND CAULK

Fill any original nail holes on the brickmold with

exterior grade wood putty or paintable caulk.

Caulk seams between extender pieces, at the

sill, and brickmold to frame.

Be sure to follow the installations instructions

provided with your door system to ensure a

trouble free installation.

1/2"

HMD-17503

6497109

Summary of content (2 pages)

PAGE 1
STEP 6 – REATTACHING BRICKMOLD (IF NEEDED) STEP 7 – FILL AND CAULK With the extender kit properly installed, the Fill any original nail holes on the brickmold with brickmold can be attached prior to installing exterior grade wood putty or paintable caulk. the door unit in the opening or attached after Caulk seams between extender pieces, at the the unit is installed. sill, and brickmold to frame.
PAGE 2
STEP 1 – POSITIONING DOOR UNIT ON WORK SURFACE & REMOVING BRICKMOLD (IF NEEDED) Lay the door system flat on padded sawhorses or other protective surface to avoid scratching the door, with the side to be extended up. For Inswing units that have brickmold attached carefully remove the brickmold by tapping on IMPORTANT: The side jamb extenders are handed. The bottom of the jamb extender STEP 4 – INSTALLING SIDE JAMB EXTENDERS will have a bevel and a small hole.