Direct Garage Doors 877-357-DOOR
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How to measure your finished frame

Get Roll Up Doors Installation Instructions

 

How-To-Measure Your New Roll Up Door

 

Use the illustration and instructions below to measure your garage roll up door. Take these measurements and call us to purchase the roll up door that is right for you.

Step #1 Measure the width and height of the door opening in feet and inches, which will determine the garage door size  you need. The rough opening should be the same size as the door.

Step #2 Measure for sideroom - 3-3/4" is required on each side for installation of the vertical track for standard extension springsand standard torsion springs.

Step #3 Measure area labeled "headroom" – distance between the top of the door opening ("jamb header") and the ceiling (or floor joist). 10" is required for the standard extension spring, while 12" is required for standard torsion spring. If you have restricted headroom, special hardware is available. Additional headroom is required for installation of an automatic garage door opener. NOTE: If door height extends above the opening, the headroom measurement should be adjusted proportionately.

Step #4 Measure area labeled "backroom" – distance is measured from the garage door opening toward the back wall of the garage. Door height plus 18" is required. Additional back room may be required for installation of an automatic garage door opener.

For more information about the different terms used in this page, go to our glosary of terms page

Additional items to observe:


Verify electrical outlet for door opener use.
Note any lights or stairs in the way.
Verify all jambs are in good condition, header is stable.
Verify the level of the floor. Was the previous door a custom fit?
Note any pipes, ductwork, etc. above the door that might obstruct operation of the door.

roll up doors measurement

 

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