Need help ordering your perfect roll-up door? Measuring your roll-up door for light-duty or heavy-duty applications can be an easy task that requires little time, detailed instruction, accuracy, and precision. We’ve broken down the process into five easy steps for your convenience and clarity:

1. Door Opening

  • Measure the width of the finished opening area. This is the distance between the right and left sides of the finished opening. Make sure to keep an eye out for any irregularities such as jambs that are not square.
  • Measure in ¼” increments to make sure you have an accurate door size.

2. Side Room

  • Measure for side room.  4″ – 11″ (depending on door series) is required on each side for installation of the vertical track, this area needs to be capable of flush mounting the tracks and clear of
    Use the diagram above to help you visualize which areas of your interior you will need to measure for your roll-up door.

    any obstructions. (contact manufacturer for specifics)

3. Inside Dimensions of Door Jamb

  • Measure the width of the rough opening at the widest point. This is the distance between the right and left sides of the finished opening in feet and inches (to the ¼”). Then measure the height from the floor to the bottom of the header. The finished opening measurement will be the same size as the roll up door size you will need to order.

4. Clearance of Door Jamb

  • Measure the clearance from the inside edge of the jamb to the wall or nearest obstruction. The average distance required for most garage door installations is 3 ½” to 11” depending on the series.

5. Head Room

  • Measure the distance between the top of the door opening and the ceiling or nearest obstruction.

Additional Items to Observe

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

For more information on how to get the most accurate measurement for your roll-up door, and to order your roll-up door, contact your local DBCI representative.