Standard Interior Door Sizes Rough Opening

Getting the rough opening size right the first time will save you from frustration when installing your doors.

Standard interior door sizes rough opening.

For reference standard interior door widths range from 24 36 finished opening. Custom doors can be made to match any size door opening. The difference between a rough opening and finished opening is usually 2 3 inches. The standard height of the rough opening for a door is the door height plus 2 5 8 inches.

As a home improvement contractor the majority of doors i replace are standard interior size doors. When replacing your doors take a picture of the door profile to. While a standard door height is 80 finished opening. Just add 2 to the width of the actual door size.

Measure the width of the rough opening at the top middle and bottom. Typically a pre hung door is measured in 30 inch and 36 inch sizes with additional sizes available in non standard widths. On average you can expect to pay roughly 20 25 percent more for a custom door. You should add 2 1 2 to the height of the actual door.

This can be done with an existing door finished opening or a rough opening where you can see the 2x4 s. While a door width of 36 inches is oversized for an interior door it s the standard size for front doors the standard height remains the same however. Presuming the door is a 36 inch wide door the dimensions of your opening should be 37 inch wide by 81 inch tall. If you re going to frame a rough opening for a door then you ll need to know the unit size.

The additional room allows for a 3 4 inch top jamb a shim. Measure inside dimensions of the door jamb. Standard door rough openings. This takes into account the thickness of a standard 3 4 inch doorjamb on each side.

Framing rough opening sizes are really quite simple. The height of common doors is 6 feet 8 inches. For standard wood framed construction the rough openings for doors and windows is typically the actual unit size plus 2 1 2 inches in height and width. The rough opening for a standard sized interior door is 2 inches wider than the state size of the actual door.

The doors are also a standard 80 inches tall. Although custom doors do cost more money. Refer to the. Add 2 to 2 1 2 inch to the measurement of the door s width to determine the total width of the rough opening.

This will give you room to space the door frame off of the sub floor. The standard width of a steel entry door s rough opening is 3 4 40 for a single door and 6 4 76 for a double door. Doors come in a variety of sizes so a general rule of thumb or practice is considered.