Standard Door Width: Important Measurements To Know (2024)

FAQs

Standard Door Width: Important Measurements To Know? ›

The standard size for a door frame is 80 inches by 36 inches, with the rough opening slightly larger at 82 inches by 38 inches. This standard size can vary depending on how tall are standard doors, the type of door, as well as the specific measurements of your home.

How Wide is a Door in a Typical Home? When it comes to average door width, you can expect a lot more variance in the size of your doors. Typically, the standard exterior door is 36 inches wide, while the standard interior door size is 32 inches wide.

Take measurements near the top, middle and bottom of the frame. Write down the largest of these measurements as the width of the door unit. Measure the depth of the frame from the inside edge to the outside edge, excluding brickmould and trim pieces.

For example, a nominal door size of 36 inches would fit into a rough opening 36 inches wide. The actual size of the door slab may be slightly smaller than the nominal size, typically by about 3/4 inch on each side, allowing for clearance around the door to ensure it can open and close smoothly.

That means a door that is 30 inches wide might be referred to as a 2/4, as in 2 feet x 4 inches. wide. The most common interior door widths are 2/0, 2/4, 2/6, 2/8 and 3/0, which translates to 24, 28, 30, 32, and 36 inches wide.

There should be a 2mm or 3mm gap between the door and the frame on both sides and the top. If you do need to cut the door down to size, keep in mind that you need to cut all four sides of the door equally whenever possible to retain an accurate shape or pattern if the door is panelled.

According to building regulations, the minimum width for an internal doorway is 750mm when approach is head-on from a corridor of 900mm. Or 775mm clear opening width when the approach is not head-on, from a corridor of 1050mm.

What are standard interior door sizes? Standard internal doors sizes can range from 420mm to 920mm wide, and from 2040 to 2340mm high, depending upon the style and door range.

In conclusion, a 30-inch door is precisely 30 inches wide in terms of the door slab. However, when installing it, you will need to consider the framed opening, clearance requirements, swing, and other factors to ensure that the door fits snugly and operates correctly.

The Americans with Disabilities Act (ADA) states that doors should be a minimum of 36 inches wide. While residential doors generally don't need to comply with this standard, some do anyway — especially newer homes built with older adults and individuals with mobility concerns in mind.

Can a front door be 32 inches wide? ›

If you're designing a home with accessibility in mind, pay attention to door width. For example, in a commercial setting, a 32-inch minimum width is required to accommodate wheelchair users. Our custom doors can be sized in 1/8-inch increments, so it's possible to get very precise.

Standard Size for Interior Doors

The height for all passage doors must be a minimum of 80 inches and the standard width sizes for interior doors are 24”, 28”, 30”, 32” and 36”. The minimum recommended door width to allow persons with disabilities' to pass through is 36 inches.

It's generally recommended not to take more than a quarter-inch off the sides. However, you should refer to your product finishing instructions or consult the manufacturer to ensure you don't trim off so much that it causes significant damage, meaning you have to buy an entirely new door.

By ADA standards, the clear width of a door opening must be a minimum of 32 inches. This clear width measurement is taken between the face of the door and the stop of the frame with the door open to 90 degrees (Figure A). In pairs, at least one of the active leaves must comply with this clear width requirement.

Margins (sometimes also called “rebates”) are the spaces between the door and the door frame. These are often important if you're looking at issues with your hinge jamb. Again, these spaces can be broken down into specific types: the hinge margin, strike margin, top (header) margin, and bottom (sweep) margin.

It should also be consistent — the same size from top to bottom on all three sides of the door. A gap of around 1/8th of an inch is recommended for standard doors to keep the elements out, protect the paint on the trim, and ensure that the door closes and opens smoothly.

One thing is nearly unavoidable, though–the small gap between the floor and the bottom of your door. That gap promotes air circulation. The gap under your interior doors should be anywhere between a half-inch and three-quarters of an inch, but the actual size will depend on the type of flooring you have.

There are a few different standard sizes for front doors, but the most common is 36 inches wide by 80 inches tall. Some doors can be as narrow as 30 inches and as tall as 96 inches, though, so it's important to find the exact measurements.

Standard Sizes

Standard door heights are 6/6 (78”) and 6/8 (80”). In addition, special sizes can sometimes be custom ordered. A 36” x 80” pre-hung single door will use a rough opening of approximately 38-1/2” x 82-1/4” to fit.

Doors: Exterior Entry Doors: Typically range from 36 inches (3 feet) to 42 inches in width and 80 inches in height. Interior Doors: Common widths are 24 inches (for closets and smaller rooms), 28 to 32 inches for standard rooms, and 36 inches for wider openings or accessibility purposes.

What is the width of a door when framing? ›

Framing rough opening sizes are really quite simple. Just add 2″ to the width of the actual door size. You should add 2-1/2″ to the height of the actual door.