Barn Door Size Guide

Monday, December 31st, 2018

Author: Kate Allen - Rustica Founder and CEO

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Dimension chart: 36-inch opening plus two 2-inch overlaps equals a 40-inch barn door panelPanel width = opening + left and right overlap36 in opening2 in2 in40 in panel width
Width example only. The 2-inch overlaps are illustrative; confirm the required coverage, trim clearance and hardware travel for your installation. On small screens, scroll the illustration sideways to see all details.
 
Installer measuring a finished opening for a barn door

When it comes to deciding on a sliding barn door for your home, it doesn’t have to be a difficult installation process. In fact, these beautifully crafted, space-saving doors are quick and easy to install, and they’ll be a hit among your guests if you like to entertain.

But before you get to sliding, you’ll want to make sure you’ve got your door all sized up. Bust out your tape measurer and check out our tutorial on how to measure your barn door.

Know which room (or rooms) you’re planning to outfit with a brand new sliding barn door? Got all your relevant measurements recorded? Great! Let’s move on to the different sizes available:

Standard barn door sizes

Common panel dimensions include widths such as 36 and 42 inches and heights such as 80, 84 and 96 inches, but availability varies by model. A 36-inch-wide panel does not provide side overlap on a 36-inch-wide opening. Select the panel from the finished opening and required overlap.

However, we realize that not everyone has standard door openings, so we offer several sizes of sliding barn doors to help fit your needs with the following measurements:
  • 36" x 80"
  • 36" x 84"
  • 36" x 96"
  • 42" x 80"
  • 42" x 84"
  • 42" x 96"

These dimensions are typically more common for interior barn door sizes for areas like bedrooms and offices, as well as other entryways inside the house.

On the flipside, bigger doorways for rooms such as libraries, dens and living rooms typically have taller and wider dimensions. For wider areas, you need to take into consideration the amount of space on either side of the door in case you want to opt for a striking double barn door effect. Sizing for double barn doors could potentially use two 36” wide doors, or a custom option that best suits your home’s dimensions. Which brings us to…

Custom barn doors for your home

If you don’t see your door or entryway’s specific dimensions here...Don’t worry! You can rest assured knowing that we provide a wide range of customizable sliding barn door sizes to make whatever your unique measurement may be, work. Whether you have a narrow space to work with or vaulted ceilings and high entryways, we can customize a sliding barn door to your specifications.

Available custom dimensions depend on the door style, construction and hardware; confirm the current limits for your chosen model. Simply, find a style of barn door that you love, then add your specifications to customize a door that works with your home’s architecture. From there, we’ll begin crafting the perfect “fashion meets function meets fit” barn door for your home.

The importance of track length

It’s also important to note that when measuring your door for its desired size, you’ll want to take into account the track length required for the chosen panel and operating system.

For a single panel, twice the panel width is a common starting estimate for track length. Confirm travel, hanger spacing, stops and soft-close requirements for the selected system. Panel overlap controls closed coverage; track travel determines whether the opening can clear.

Whether your home lends itself to a standard sized barn door or if you need a more narrow or taller door to fulfill your unique needs, we offer a variety of standard and custom barn door sizes (and hardware) to make sure you get the sliding door of your home decor dreams.

A Visual Guide to Your Options

Worked single-panel width examples
Finished openingExample side overlapCalculated panel width
28 in2 in per side32 in
30 in2 in per side34 in
32 in2 in per side36 in
36 in2 in per side40 in
42 in2 in per side46 in
Pair of five-panel barn doors meeting at the center
Paired doors require their own coverage and travel calculation. Do not apply a single-panel example to the pair without checking the system.

Use the width examples as arithmetic, not an order form

The table assumes 2 inches of overlap on each side simply to show the calculation. Your design may need a different overlap. If you want the panel to cover casing as well as the opening, include that coverage in your dimensions. For pairs, bypass or bifold doors, use the system-specific sizing method.

For height, a useful relationship is: panel height = height from finished floor to top of opening + desired top overlap − floor gap. The hardware drawing still determines where the track mounts. Start with the barn door measurement guide.

Questions, answered

Will a 36-inch barn door cover a 36-inch opening?

It provides no side overlap if both dimensions are truly 36 inches. Plan the overlap needed for coverage and privacy, then check trim and the selected hardware. Do not order from the opening width alone.

Is an 84-inch barn door right for an 80-inch opening?

It may be, but panel height alone does not prove fit. Check the finished floor gap, desired top overlap, available overhead space and mounting height shown in the hardware instructions.

Should the track be twice the door width?

Twice the panel width is a common planning estimate for a single sliding panel, not a guarantee. Stops, soft-close parts, hanger spacing and the required clear opening determine the final track length.

Sources & further reading

Updated · Original guide refreshed with comparison details and practical checks.