How Wide is a Door in a Typical Home? When it comes to average door width, you can expect a lot more variance in the size of your doors. Typically, the standard exterior door is 36 inches wide, while the standard interior door size is 32 inches wide.
For example, a nominal door size of 36 inches would fit into a rough opening 36 inches wide. The actual size of the door slab may be slightly smaller than the nominal size, typically by about 3/4 inch on each side, allowing for clearance around the door to ensure it can open and close smoothly.
In conclusion, a 30-inch door is precisely 30 inches wide in terms of the door slab. However, when installing it, you will need to consider the framed opening, clearance requirements, swing, and other factors to ensure that the door fits snugly and operates correctly.
The standard size for an exterior door is 80 inches by 36 inches which is 6 ft, 8 inches by 3 ft. 96 inches or 8 ft. is now very common for newer homes and stock exterior doors are also commonly available in 30 and 32-inch widths.
Standard Door Width for Interior Doors
The standard door width for bedrooms, bathrooms, and other interior rooms in modern homes is 30 to 32 inches. However, you might also find smaller standard door widths for bathrooms, basements, utility rooms, and pantries, especially in older homes.
While homes come in all shapes and styles, most entry doors follow some common measurements. The most typical standard door width is 36 inches, paired with a height of 80 inches. However, don't worry if your measurements differ — standard door sizes can range from: Width: 30 to 45 inches.
The notion of nominal vs actual door size is very important as all commercial doors are undersized from their nominal size by 1/8” on each of the sides and the top and usually by 3/4 “on the bottom. Therefore when we say a 3'0 x 7'0 door, the actual door size is 35 ¾” x 83 1/8” NOT 36” x 84”.
So, if you have a bedroom door that is 30″ wide (which is considered a 2/6 or 2′-6″ door) just add 2″ to the width and frame it 32″ wide. The height is 80″ (which is considered 6/8 or 6′-8″) add 2-1/2″ to the actual door height and frame it 82-1/2″ high.
For reference, standard interior door widths range from 24"-36" (finished opening). While a standard door height is 80" (finished opening). The difference between a rough opening and finished opening is usually 2-3 inches.
Take three measurements inside the door frame – at the top, middle and bottom. The widest measurement determines the width of the door. Use a tape measure to understand the width of the three areas of the door frame. Run the tape measure along the width of the frame from the left to the right and record these numbers.
The minimum width of each door opening shall be sufficient for the occupant load thereof and shall provide a clear width of not less than 32 inches (813 mm). Clear openings of doorways with swinging doors shall be measured between the face of the door and the stop, with the door open 90 degrees (1.57 rad).
Standard entry door measurements: Height: 80 inches (6 feet 8 inches) Thickness: 1 3/4 inches. Width: 36 inches standard (30 and 32inches also available)
For a standard 36-inch exterior door, the rough opening should typically be 38 inches wide and 82.5 inches tall. This allows for a 2-inch margin on the sides and a 0.5-inch margin at the top for the door frame. Before you begin the installation process, it's essential to measure the existing wall framing accurately.
Door sizes themselves do not include the frame. However, manufacturers do provide information about the minimum rough opening dimensions that the door frame will fit in. Measure the rough opening, not the door.
A door astragal, also referred to as astragal molding, is a vertical piece of door hardware used to completely seal the thin space between the door edge and the door frame. In a double door system, astragals seal the gap between the two doors or leaves.
The standard door width can vary, since there is a ton of variety in sizes and styles of doors. But the standard common door width for US homes is 36 inches. Other very easy-to-find sizes are 30 and 32 inches.
For a single interior door, the rough opening should be 2 inches wider and 2.5 inches taller than the actual door size. For example, if the door measures 30 inches wide by 80 inches tall (commonly referred to as a 2/6 x 6/8 door), the rough opening should be 32 inches wide and 82.5 inches tall.
To comply with ADA guidelines, doorways should have a minimum clear width of 32 inches when the door is open to 90 degrees. This width is essential for individuals using mobility aids to pass through without obstruction.
A slab door is simply a door by itself. It has no frame, hinges or other hardware. When you install a slab door, you either install it in an existing door frame or build a frame for it yourself. A slab door, sometimes known as a blank door, is more economical than a comparable prehung door.
A reinforced steel door is one of the most secure types of front doors you can buy. They're made with thick, heavy-duty steel that's designed to withstand a lot of force. And, they usually have multiple locks to keep intruders out.
However, the most common door size is 762mm wide and 1981mm high. When measuring for a new front door, keep in mind that the actual size of the aperture will be a little larger than the size of the door itself to account for the door frame.