Measurements

How to Determine the Dimensions of Your Garage Door

Steelhead Doors will professionally measure your garage door in six steps.

1. Measure the width of the opening at the widest point. This is the distance between the right and left sides of the finished opening. For best results, the inside of the garage door opening should be framed with 2-inch x 6-inch wood. Look for general irregularities, such as jambs that are not square.
2. Measure the height of the opening at the highest point. This is the distance between the floor and the top of the finished opening. Look for general irregularities, such as an un-level floor.
3. Measure the width of the areas beside the openings. Up to 5-inches are required on each side for installation of the vertical track. If this is a 2-door installation, the center post should be a minimum of 10-inches wide.
4. Measure the area between the top of the door opening and the ceiling (or to the lowest obstruction at the ceiling). See the manufacturer’s brochure for required clearances on coiling roll-up doors.
5. Measure the distance from the opening to the rear of the garage or nearest obstruction. For sectional type doors, the backroom requirement is the door height plus an additional 18-inches for manual lift doors. If an electric opener is to be installed, the door’s backroom requirement is the door height plus an additional 4-feet, 2-inches.

Garage Door Measuring Tips

Steelhead Doors will manage an installer to ensure you get all the right hardware – and a new garage door opener – if you wish.

Additional items to observe:

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