Find 51+ Charming Interior Doors Rough In Sizes Most Outstanding In 2023

The standard interior door rough opening size varies depending on the type and size of door being installed. Having the correct measurements is important when framing out a rough opening, as the door won't be able to fit if the opening is too small. The rough opening size should be at least one inch wider than the actual door size, and two inches taller. This allows for space to account for the jambs and trim work. Common interior door rough opening sizes can range from 24”x 80” to 36” x 98” for a single pre-hung door.

The door sizes and rough opening dimensions will depend on the type of door you intend to install. Interior doors, like bedroom and bathroom doors, are typically sized either 30” x 80” or 32” x 80”. Patio doors, sliding doors, and French doors generally come in double-sizede door units with the typical size being 80” x 96”. For bifold doors, the rough opening size should be twice the door plus two inches for allowances. The standard pre-hung door unit comes with the jamb frame and the jambs attached to the wall studs in the rough opening.

A single pre-hung interior door should have a rough opening of two and a half inches wider and two and a half inches taller than the corresponding door. A double pre-hung doors should have a rough opening two inches taller and three inches wider than the double unit. Standard rough opening for an interior door can be anywhere from 28” x 82 1/2” to 42” x 100 1/2” for a single and double pre-hung.

Interior doors normally come in two sizes, which are 30” x 80” and 32” x 80”. Accordingly, the opening should be standard interior door rough openings of 31 1/2” x 81 1/2” for 30” x 80” door, and 33 1/2” x 81 1/2” for a 32” x 80” door. Patent pre-hung interior door sizes are typically larger, like 36” x 80” or 34” x 80”, so the rough opening size should be 37 1/2” x 81 1/2” and 35 1/2” x 81 1/2” respectively.

Most doors will require a rough opening from exterior to interior walls, however there are some total-prefab door units that are put directly in between the trim and the jamb. The rough opening for doors for such units will depend on the type and size. Generally, the rough opening should be three inches more in width and two inches more in height for patent or double pre-hung doors.

Interior doors are more diverse in types and sizes than exterior doors. While exterior doors are normally of the same size, interior doors can come in a variety, including single pre-hung door, double pre-hung door, bypass doors, bifold doors, and sliding doors. Therefore, the interior door rough openings needed to be framed in for each and every one of them will differ significantly. Normally, a single pre-hung door should have an rough opening that is two and a half inches wider and two and a half inches higher than the corresponding door, whereas a double pre-hung should have an opening that is three inches higher and two inches wider.

Bi-fold doors and sliding doors usually require a much larger rough opening width when compared to standard single pre-hung and double pre-hung doors. This is because of the additional space they will need for the jambs and trim work. For pre-hung bi-fold doors, the door rough opening widths should be 2x the door plus two and a half inches, and for sliding doors, the width should be anywhere from 1.5x the door plus one inch to 2x the door plus one inch.

Each type of door requires different rough opening specifications. Single, double, and patent pre-hung doors should have an opening two and a half and three inches more in width and height then the corresponding doors. For sliding, French, and bi-fold doors, more rough opening is needed for the jambs to fit in. Rough opening specifications should be followed as written in the manual provided, and with the right tools and measurements, doors will never go off-kilter.

Masonite is a well-known manufacturer of interior and exterior doors, and it generally provides easy-to-follow rough opening sizes for all of their products. Masonite offers a wide variety of door products with different sizes, so the interior door rough opening sizes Masonite specified for each one should be consulted in their manual before any installation.

Typical interior door rough openings are recommended to be about two and a half inches more than the corresponding door in width and height. This allows for the jambs and trim work that come with the pre-hung door unit. Depending on the type of interior door, the rough opening size can range from 24”x 80” to 42”x 100 1/2” with the standard rough opening size being 31 1/2” x 81 1/2” and 37 1/2” x 81 1/2”.