Measurement Guide

Grisham Recessed Mount Rough Opening Sizing Guide For:
100, 300, 400, and 500 Series Stock Security Doors.
Call Size of Security Door
Rough Opening Width Requirement
Rough Opening Height Requirements
30" in. x 80" in.
29 3/4" to 30 1/2"
79 3/4" to 80 3/4"
32" in. x 80" in.
31 3/4" to 32 1/2"
79 3/4" to 80 3/4"
34" in. x 80" in.
33 3/4" to 34 1/2"
79 3/4" to 80 3/4"
36" in. x 80" in.
35 3/4" to 36 1/2"
79 3/4" to 80 3/4"
34” in. x 84” in.
33 ¾” to 34 ½”
83 ¾” to 84 ¾”
36” in. x 84” in.
35 ¾” to 36 ½”
83 ¾” to 84 ¾”
Measure for Rough Opening Width
Measure the top, middle and the bottom of the entry door opening. The smallest of the three measurements will be your rough
opening width. Use the above sizing chart to determine if a standard size door will fit or a custom sized door is required.
Measure for Rough Opening Height
Measure from the threshold to the
bottom portion of the brickmold header
of your entry door.
1” inch minimum
mounting surface
1” inch
minimum
mounting
surface
Brickmold
should be
fully
secured
to wall
studs
Brickmold
should be
fully
secured
to wall
studs
Measure for Rough Opening Width
Measure the top, middle and the bottom inside diameter width of the entry doors brickmold opening. The smallest
of the three measurements will be your rough opening width. Use the above sizing chart to determine if a standard
size door will fit or a custom sized door is required. Questions? Email: [e-mail]
Rough Opening
Width
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How to install A
Grisham security
Door