Installation Guide
COMPOSITE DOOR FRAME 
INSTALLATION INSTRUCTIONS
Contents:
•  83” left side frame with weather seal
•  83” right side frame with weather seal
•  36” top frame with weather seal
Other Components Required:
•  Composite Brickmould kit
•  Interior casing kit
•  Shims
•  (6) #8 x1-5/8” screws to fasten frame together
•  (10) #10 x3” screws to fasten frame to rough 
opening
Tools Required
•  Tape measure
•  Safety glasses
•  Power drill/driver
•  Power chop saw or miter box
•  Framing square 
•  Level
Installation Instructions
STEP 1: Measure the rough opening.
STEP 2: Trim the frame to t around the door slab 
being used (about 1/8 in. gap) and also to t in the 
rough opening (about 1/2 in. gap.) The thick part 
on the bottom of the side frame is factory cut at 5 
degrees to t most sills. The top of the side is notched 
to t the top frame. Trim the bottoms to t the sill 
being used and to t the height. Cut the top frame 
1-1/2 in. smaller than the nal frame width needed
STEP 3: Screw each side frame to the top frame with 
(3) #8 x 1-5/8 in. screws.
STEP 4: Set the frame assembly in the rough opening. 
Shim the frame in place at 5 locations on each side 
and 1 on the head. Ensure it is plumb, level and 
square.
STEP 5: Fasten the frame to the rough opening with 
#10 x 3 in. screws through the side frames and head 
at each shim location underneath the weather seal.
STEP 6: Install the Composite Brickmould kit on the 
exterior of the door frame.
STEP 7: Install interior trim on the interior of the door 
frame.
SH/CDF/II1000/0719PTP©2019 FrontLine Bldg. Products Inc.
www.frontlinebldg.com | sales@frontlinebldg.com | 920-393-1340
STEP 8: Install hinges and lock plates as needed for 
the door being hung on the frame. Route the frame 
to t the hinges and lock plates selected.
STEP 9: For primed and woodgrain composite 
jambs, nish the surface of the frames within 15 days 
of installation to prevent the factory primer from 
breaking down. Woodgrain has a tan primer on it to 
accept stain, clear coat, or paint.
STEP 10: Seal with high quality caulk: inside top 
corners, bottom corners to sill, brickmould to siding, 
and brickmould to frame.

