Measurement Guide
Accurate measurements are crucial for ordering the right garage door. Follow these steps to measure your opening correctly.
Measurement Reference Diagram
Measure the finished opening width and height, then confirm sideroom on both sides, headroom above the opening, and backroom depth into the garage. These measurements determine whether your selected door and track option will fit correctly.
Measure Twice, Order Once
Inaccurate measurements can result in a door that does not fit. Always double-check your measurements before placing an order. If you are unsure, our specialist support team can help verify your measurements.
What You’ll Need
- 25-foot measuring tape, minimum.
- Pen and paper to record measurements.
- Helper, recommended for accurate measurements.
5 Critical Measurements
- Opening Width: Measure at the widest point of the garage door opening, from the right side to the left side of the finished opening.
- Opening Height: Record the distance from the floor to the top of the finished opening at its highest point.
- Side Room: Measure the width of the space on both sides of the opening. Vertical track installation needs up to 5 inches on each side. Two doors side-by-side require a center post with a minimum width of 10 inches.
- Headroom: Measure from the top of the opening to the ceiling or the lowest obstruction above, such as pipes, beams, or lights.
- Backroom: Measure from the opening toward the back of the garage to the rear wall or nearest obstruction. For sectional doors with manual lift, you need the door height plus an additional 18 inches of clearance.
Need Help With Measurements?
Our DIY specialist team is here to help you verify your measurements and ensure you order the right door for your opening.