Installation Guide
windows and door trim
accessories installation
Bottom of
bottom c
lip at
least 2" abo
ve
bottom of
mantel
Centerline
X
X
Top of top
clip no
more than
4
3
/4" abo
ve
bottom of
mantel
Standard Length Mantels
Locate the centerline of where the 
mantel will be installed. Measure to 
each side of the centerline as 
specified for each length mantel (see 
chart below).
Scribe a vertical line approximately 
6˝. These lines will correspond to 
the locking legs on the back of the 
mantels. Install 2 mounting clips to 
each line with the bottom of each 
clip at least 2˝ above the bottom of 
the mantel, and the top of the other 
clip no higher than 4-3/4˝ above the 
bottom of the mantel. (Fig.1)
Position the mantel over the clips and 
snap into place. (Fig.2) 
NOTE: When applying clips over 
beveled siding, you will have to 
shim and/or bend the top of the clips 
to keep the clip throats the same 
distance from the wall.
To Install End Caps
(For non-standard window sizes.)
Cut the window mantel to the 
required length minus 3/8˝. NOTE: 
The cut on a mantel with dentil 
blocks must be 1/8˝ to the right 
(facing the mantel) of a full dentil 
block. Clean any shavings or grit 
from the cut end(s). Insert the end 
cap into the mantel and mark the 
mantel on the inside. Remove the end 
cap and spread adhesive on both the 
lip of the end cap and the end of the 
mantel where marked.
Insert the end cap into the mantel and 
clamp each side. Allow 10 minutes 
for drying and then install the mantel 
into place as described above. (Fig.3) 
To Shorten a Mantel
Determine length and make two 
cuts to remove excess material from 
the center of the mantel. Be sure to 
cut through the center of the dentil 
blocks. 
Turn the mantel sections face down.
Drill a 3/16˝ hole in the second 
indented hole marker 2-3/4˝ from 
the cut edge of both mantel sections. 
Place mantel overlay face down 
under the cut and drilled mantel 
sections. The mantel overlay screw 
bosses will align with the 3/16˝ 
drilled clearance holes. A paper 
pattern is included to locate screw 
location. Fasten together with 
#8x1/2˝ self-tapping screws. 
NOTE: Mantels must be installed 
directly over brick or stucco siding. 
If vinyl siding is to then be applied, 
panels will have to be cut to fit 
around the end caps. Mantels can 
also be installed in remodeling 
applications over vinyl siding.
Mantel Length   Measurement
 36"     16-5/8"
 40"     18-5/8"
 44"     20-5/8"
Fig.1
Apply
Adhesive
Mark Mantel
Inside
(Back) View
Fig.3
26
Window Mantels










