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installation February 19, 2024 3 min read

Garage Door Sizes: A Complete Guide for Homeowners

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Ez2Fix Team
Licensed NJ Technician

Building a new garage or replacing a door? Learn the standard garage door sizes for single, double, and RV garages.


Knowing the standard sizes of garage doors can save you money. Custom sizes are available but come with a custom price tag. Here are the industry standards.

Single Car Garage Doors

These are designed for one vehicle.

  • Width: 8 feet, 9 feet (most common), or 10 feet.
  • Height: 7 feet (standard) or 8 feet (for taller SUVs/trucks).

Double Car Garage Doors

These fit two vehicles side-by-side.

  • Width: 16 feet (most common) or 18 feet.
  • Height: 7 feet or 8 feet.

RV and Oversized Doors

For RVs, boats, or workshops.

  • Width: 10, 12, or 14 feet.
  • Height: 10 to 14 feet.

How to Measure

  1. Width: Measure the width of the finished opening (inside the jambs).
  2. Height: Measure from the floor to the bottom of the header.
  3. Headroom: Measure from the top of the door opening to the ceiling (you need 10-12 inches for standard tracks).
  4. Backroom: Measure the depth of the garage (door height + 18 inches).

Custom Sizes

If your opening is non-standard (e.g., an old carriage house with a 7’3” opening), Ez2Fix can order custom-sized doors to fit perfectly.

Professional Installation: Door InstallationCommercial Garage Door

Service available in: ElizabethCliftonHackensackAll areas

Ready to schedule? Book your free estimate or call (201) 554-6769.

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Written by

Ez2Fix Team

Our team of licensed NJ technicians has decades of combined experience in garage door repair and installation. We're committed to sharing our knowledge to help homeowners maintain safe, functional garage doors.