Standard Interior Door Sizes Rough Opening

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.

Standard interior door sizes rough opening.

Measure inside dimensions of the door jamb. Measure the width of the rough opening at the top middle and bottom. Custom doors can be made to match any size door opening. If you re going to frame a rough opening for a door then you ll need to know the unit size.

This takes into account the thickness of a standard 3 4 inch doorjamb on each side. The rough opening for a standard sized interior door is 2 inches wider than the state size of the actual door. Just add 2 to the width of the actual door size. 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.

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 can be done with an existing door finished opening or a rough opening where you can see the 2x4 s. The additional room allows for a 3 4 inch top jamb a shim. Refer to the.

Getting the rough opening size right the first time will save you from frustration when installing your doors. Typically a pre hung door is measured in 30 inch and 36 inch sizes with additional sizes available in non standard widths. Standard door rough openings. Presuming the door is a 36 inch wide door the dimensions of your opening should be 37 inch wide by 81 inch tall.

This will give you room to space the door frame off of the sub floor. While a standard door height is 80 finished opening. Framing rough opening sizes are really quite simple. The standard height of the rough opening for a door is the door height plus 2 5 8 inches.

For reference standard interior door widths range from 24 36 finished opening. 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. For example let s say we want to frame a 6 8 x 3 0 front entry door. Entry doors are usually 36 inches wide.

When replacing your doors take a picture of the door profile to. The doors are also a standard 80 inches tall. The height of common doors is 6 feet 8 inches. Make sure to add an additional of an inch on each side for room for the frame to shimmy.

The difference between a rough opening and finished opening is usually 2 3 inches. On average you can expect to pay roughly 20 25 percent more for a custom door. Doors come in a variety of sizes so a general rule of thumb or practice is considered.