Skip to Main Content
1 (800) 929-3667 (Door) Request a Quote Find a Distributor
Overhead Door
    • Garage Doors by Style
    • All Residential Garage Doors
    • Garage Door Openers
    • Garage Door Accessories
    • Wind Load Garage Doors
    • Residential Gate Operators

    • Resources

      • DoorDreamer® : View any Door on Your Home in Seconds
      • Repair My Garage Door
      • Programming Instructions
    • Commercial Product Categories
    • All Commercial Doors
    • Commercial Operators
    • Commercial Accessories
    • Loading Dock Equipment
      • Automotive
      • Family Housing
      • Food & Beverage
      • Government Facilities
      • Healthcare
      • Manufacturing
      • Parking Garage
      • Public Facilities
      • Security
      • Warehouse Solutions

    • Commercial Resources

      • Commercial Door Repair
    • Overview
    • Repair My Garage Door
    • Commercial Door Repair
    • Repair vs. Replace
    • Garage Door Opener Repair

      • Find a Distributor
    • Overview
    • Brochures
    • Warranty
    • Owners Manuals
    • Commercial Specs
    • Residential Specs
    • Dock Installation Instructions

      • DoorView - Configurator
    • Overview
    • Customize Architectural Drawings
    • BIM Object Library
    • CAD Drawings
    • Specifications

    • Additional Resources

      • Customize Architectural Drawings
      • Resources
      • Brochures
  • Home
  • About Garage Doors
  • How to Measure a Garage Door

How to Measure a Garage Door

Garage door carriage house 3 car

Measuring your garage door accurately is the first crucial step when preparing to replace it with a new Overhead Door™ Brand model. Ensuring precise measurements guarantees a perfect fit, enhancing the performance and longevity of your new door. This guide will walk you through the essential steps to measure the width, height, and clearance requirements, helping you make an informed decision and ensuring a seamless installation process for your new Overhead Door™ Brand garage door.

5 Steps to Measure a Garage Door

 

Replacing your garage door with a new Overhead Door™ Brand model starts with precise measurements. Understanding common garage door dimensions can streamline the process. Standard widths are 8’, 9’, 16’, and 18’, while heights are typically 7’ or 8’. Custom sizes are also available. Follow these steps to measure your garage door accurately:

What You'll Need:

A 25-foot tape measure

 

Width (A):

Step 1: Hook your tape measure on one edge of the garage door opening.

Step 2: Pull the tape across to the other side to measure the distance between the left and right sides.

Double-check: Open the garage door and measure from jamb to jamb.

 

 

 

Height (B):

Step 1: Hook your tape measure on the bottom of the garage door.

Step 2: Measure up to the top of the door.

Double-check: Open the garage door and measure from the floor to the header.

Note: Watch for any floor irregularities.

Sideroom (C):

Step 1: Measure the space between the wall and the door jamb on both sides of the door.

Note: Allow up to 6 inches on each side for vertical track installation.

 

 

 

Headroom (D):

Step 1: Use a ladder to extend the tape measure from the ceiling to the bottom of the door header.

Note: Consider any obstructions below the ceiling such as an entry or attic door.

Room Depth (E):

Step 1: Hook the tape measure on the concrete slab at the door opening.

Step 2: Measure back to the farthest point where the hardware or opener will be installed.

Note: This measurement is crucial for horizontal track installation. If space is limited, consider a side-mount garage door opener.


Tips:

Record all measurements and have them ready when purchasing or requesting a quote.
Verify the header is level and measure at multiple points for accuracy.

 

By following these steps, you'll ensure your new Overhead Door™ Brand garage door fits perfectly, enhancing both the appearance and functionality of your home.

Find a Distributor

Overhead Door

1 (800) 929-3667 (DOOR)

Homeowners

  • All Residential Garage Doors
  • DoorDreamer® : View any Door on Your Home in Seconds
  • Repair My Garage Door
  • Smart Home Hub

Professionals

  • Commercial
  • Architects
  • Loading Dock Equipment
  • DoorView - Configurator

Useful links

  • About Us
  • Blogs
  • News
  • Contact Us
  • Careers
  • © 2025 Overhead Door. All rights Reserved.
  •  Legal
  •  Privacy Policy
  •  Sitemap
  • Supply Chain Ethics Policy