Best Of 77+ Exquisite Interior Doors Rough In Size Voted By The Construction Association

How to Measure Your Rough Opening for an Interior Door

Measuring the rough opening for your interior door is the first step in properly installing a pre-hung door. This involves measuring the width, height, and depth of the space you are installing your door into. Then use the measurements to determine the size of the door frame and the Interior Door Rough Opening. This will ensure you purchase the right size door and don't end up wasting money on an incorrectly sized door.

To begin, measure the height of the rough opening and subtract two inches for the header. This is the distance between the top of the header and the ceiling. Next, measure the width between the two vertical side pieces or studs and subtract two inches for the two jamb widths. Finally, measure the depth of the rough opening from the hinge side to the strike side. Always measure twice to get the most accurate measurements as even 1/8 of an inch can make a difference.

Once you have the width, height and depth of the rough opening, you will then need to select a pre-hung interior door. Most residential door sizes are 80” high, but they come in many widths. To determine the size door needed, add two inches to the measured width, and two inches to the measured height. For instance, if your opening measured 80-1/2” in width and 81” in height, then your door should be 82-1/2” in width and 82” in height.

Once you have the proper door size, double check the measurements and purchase a door that is two inches wider and two inches taller than the rough opening you have determined. You will also need to make sure the jamb depth of the door matches that of the rough opening you measured. If your doors are too narrow, too tight, or too small, it will likely need to be mortised. To determine the jamb depth selected, add the header and two jamb thicknesses to the total rough opening depth.

Interior Door Rough Opening for House Designs

When designing new homes with interior doors, it is important to take into consideration the rough opening for the interior door. This rough opening is determined by the size and type of door selected. The rough opening for an interior door usually differs from exterior doors. Since the wall stud are not exposed or visible from the inside of the home, the rough opening for an interior door is generally narrower than rough opening for an exterior door.

When measuring for the rough opening for an interior door, keep in mind common door sizes. A standard single door swings in or out and is usually 30, 32, or 36 inches wide. A standard double door set is usually 60 inches wide. However, variations of these sizes are also available. The standard door height is 80 inches.

Once you have the width and height of the door, measure the opening for the interior door. Take the width of the rough opening and subtract two inches for the two side jamb widths plus the header making sure the jambs and header are included in the calculation. To measure the height, subtract two inches for the two jambs plus the header, and one inch for the threshold or sill.

In addition, you'll then need to measure the depth of the rough opening which should be at least 5-1/2". Also, check that the door is placed to swing in or out and is the same direction as the hinges.

Pre-Hung Interior Door Rough Openings

Pre-hung interior doors will generally come with a 2-5/8 inch jamb width. The jamb width is included in the total width measurement, so after you subtract it from your rough opening measurements, you will need to adjust the door size based on this. For instance, for a 36-inch door with a 4-9/16 inch jamb width, you will need to subtract the jamb width from the total width measurement in order to find the correct door size, making the door size 31-1/2 inches wide.

You should also double check that your measurements are true and the door is properly sized before you install the pre-hung door. Verify the door is level and is the correct swing direction before nailing the jamb in place. Also bear in mind the bottom of the door should be at least half an inch above the threshold, and even further for interior doors that require a certain degree of clearance.

Overall, when dealing with pre-hung interior doors, make sure to measure twice and ensure you get the correct door size. Getting your measurements right will prevent time, headaches, and money lost due to getting the wrong size door. Additionally, ensure the door is level and is the correct swing direction before nailing the jamb in place.

Interior Door Rough Opening Chart

Interior door rough opening sizes vary depending on the size and style of the door. To measure the rough opening, follow the guidelines outlined in the Interior Door Rough Opening Guide. Generally, for a single pre-hung door you will want to subtract 2 inches from the total width and depth for the two jamb widths. Subtract two inches for the header and one inch for the threshold or sill for the height.

The following is a chart of common interior door rough opening sizes for single and double pre-hung doors:

Single Pre-Hung Door

30” wide x 82” high x 4-9/16” depth

32” wide x 82” high x 4-9/16” depth

36” wide x 82” high x 4-9/16” depth

Double Pre-Hung Door

60” wide x 82” high x 4-9/16” depth

As always, double check measurements to ensure accuracy.

Interior French Doors Rough Opening Sizes

Interior French doors usually come with frames that are already pre-hung on a separate jamb. When measuring for these doors, follow the same guidelines used for any other interior doors except consider the width of both doors and leave more space for clearance. Measure the rough opening using the guidelines outlined in the Interior Door Rough Opening Guide, subtract two inches for the two jamb widths plus the header, two inches for the two jambs plus the header and one inch for the threshold or sill for the height.

Common interior French door rough opening sizes are:

Double Pre-Hung Door

72” wide x 82” high x 4-9/16” depth

84” wide x 82” high x 4-9/16” depth

As always, double check your measurements to insure accuracy.

How to Calculate the Size of the Rough Opening for an Interior Door

Calculating the size of an interior door rough opening follows a relatively simple formula. Measure the width and height of the rough opening, (including the header, jamb widths, and threshold or sill), then subtract two inches for the two jamb widths and one inch for the threshold or sill.

The width of the rough opening should be two inches wider than the door. The height should be two inches taller than the door height. For double pre-hung French doors, measure both door widths and add them together to calculate the total width of the rough opening. Don’t forget to add the two jamb widths plus the header to the total width measurement.

The rough opening should also be at least 5-1/2” in depth. Be sure to check the direction of hinging and the swing of the door prior to fixing the jamb in place. It is important to measure twice and double check the measurements before purchasing the door.

What Are the Standard Sizes of Interior Doors?

Interior doors come in a variety of sizes ranging from standard single doors to sprawling double door French doors. Standard single doors are usually 30, 32, or 36 inches wide, while double door sets are usually 60 inches wide. Common standard interior door heights are 80 inches. However, custom sized doors can be ordered to fit each individual space.

When measuring for interior doors, remember to subtract 2 inches from the total width and height measurements for the two jamb widths plus the header, and one inch for the threshold or sill for the height. Also take into account the door’s depth which should be at least 5-1/2” and be sure the door swings in the right direction. Double check all measurements prior to purchasing the door.

Interior Door Rough Opening Guide

An interior door rough opening guide is typically a series of instructions for properly measuring and determining a rough opening for a pre-hung interior door. It involves measuring the width, height, and depth of the door opening and then using those measurements to determine the size of the door and the interior door rough opening. It also includes instructions for calculating jamb widths, headers, and thresholds or sills.

To begin, measure the rough opening width and subtract two inches for the two jamb widths plus the header, and then add two inches for the door width. Measure the height as well, subtracting two inches for the two jambs plus the header and one inch for the threshold or sill. To determine the depth, subtract the header and two jamb thicknesses from the total rough opening depth.

Before installing the pre-hung door, double check the measurements and make sure the door size is two inches wider and two inches taller than the rough opening. Also, make sure the jamb depth of the door matches that of the rough opening.

What Is the Standard Door Opening Size for a Pre-Hung Door?

The standard door opening for a pre-hung door is typically 2-5/8 inches. This will be included in the total width measurement so you will need to subtract the jamb width to find the correct door size. When measuring for the door, add two inches to the opening width and two inches to the opening height, and then subtract the jamb width for the total width. Also subtract one inch for the threshold or sill for the total height.

Keep in mind common door sizes. A standard single door swings in or out and is usually 30, 32, or 36 inches wide. A standard double door set is usually 60 inches wide. Before installing the pre-hung door, double check the measurements and make sure the door size is two inches wider and two inches taller than the rough opening. Also check the door is level and swings in the correct direction before nailing the jamb in place.

How to Measure the Rough Opening for a Pre-Hung Interior Door

Measuring the rough opening for a pre-hung interior door is an important factor in properly installing the door. Measure the width, height, and depth of the interior door. Then use the measurements to determine the size of the door and the rough opening. This will ensure you purchase the right size door so you don’t waste money on an incorrectly sized door.

When measuring for the rough opening, subtract two inches for the two jamb widths plus the header, two inches for the two jamb widths plus the header and one inch for the threshold or sill. For standard single doors, the opening should be two inches wider than the door width, and two inches taller than the door height. For double pre-hung French doors, measure the width of the two doors, add them together and subtract the jamb widths plus the header for the total width.

Once you have the width, height and depth of the rough opening, you’ll then need to select a pre-hung interior door. Remember to measure twice and double check the measurements before purchasing the door. Verify the door is level and the correct swing direction before nailing the jamb in place.