Interior Door Rough Opening Size

While a standard door height is 80 finished opening.

Interior door rough opening size.

Just add 2 to the width of the actual door size. The additional room allows for a 3 4 inch top jamb a shim. Standard door rough openings. The size of the door opening will vary depending on the size of the door you plan to install.

The height of common doors is 6 feet 8 inches. This will give you room to space the door frame off of the sub floor. For fire rated openings drywall must extend at least 1 2 into frame. Be sure to allow for about a 1 inch larger opening than the standard door sizes.

A typical door opening is 2 inches 5 1 cm wider than the door size being installed to allow for the thickness of the jamb material and shims to plumb the jamb. Add 2 to 2 1 2 inch to the measurement of the door s width to determine the total width of the rough opening. Getting the rough opening size right the first time will save you from frustration when installing your doors. This can be done with an existing door finished opening or a rough opening where you can see the 2x4 s.

The 6 8 stands for 6 8 tall and the 3 0 stands for 3 0 wide. You should add 2 1 2 to the height of the actual door. For example let s say we want to frame a 6 8 x 3 0 front entry door. Determine the size of the door opening.

Therefore the rough opening would be 82 1 2 tall by 38 1 2 wide. The standard height of the rough opening for a door is the door height plus 2 5 8 inches. The difference between a rough opening and finished opening is usually 2 3 inches. Entry doors are usually 36 inches wide.

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. Measure the opening to your door frame. Interior knockdown frames that wrap wall a opening width 2 b opening height 1 the rough opening would be 38 x 85 for a 3 0 x 7 0 door frame.

Typically a pre hung door is measured in 30 inch and 36 inch sizes with additional sizes available in non standard widths. 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. Refer to the. Masonite strives to provide our customers with as much information as possible so you can get the right door the first time.

Measure your door carefully and cut the opening to fit using a reciprocating saw.