Standard Door Casing Length

Custom doors can be made to match any size door opening.

Standard door casing length.

Since casing is as much a horizontal visual as vertical the width is not as tied to the size of the room although larger rooms with higher ceilings do call for somewhat wider casing. The standard size for an exterior door is 80 inches by 36 inches which is 6 ft 8 inches by 3 ft. With a little ingenuity and a few standard router bits you can make your own door and window trim. It is usually manufactured in 96 inch lengths to fit most doors.

Entry doors are usually 36 inches wide. Some door manufacturers sell doors in 7ft 8ft heights and door widths from 24 inches to 42 inches. Figure b shows an example of a cap molding for a head casing that we made by stacking two pieces of 3 4 in. If for some reason your existing interior door isn t a standard door size don t worry.

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. Typical door casing measures about 2 1 4 inches wide and is usually just under 3 4 inch in thickness. Lucky for you any homeowner can install standard door casing with some simple instructions. On average you can expect to pay roughly 20 25 percent more for a custom door.

Door casing and window trim are typically the same width and are interchangeable. The diy carpentry task takes about 15 minutes per each side of the door once you become familiar with. As a home improvement contractor the majority of doors i replace are. Is now very common for newer homes and stock exterior doors are also commonly available in 30 and 32 inch widths.

Many trim designs begin with door casing. Shaping the edges of wood strips with a router and stacking them to make bigger moldings is a great technique for making your own. The most widely used door casing is 2 1 4 inches in width but can range up to 3 inches.