Another thing to consider isn t just the door frame but the size of the door opening.
How big is a standard door frame.
The most basic starting point is the door size that a frame is being built to fit.
The most common door frame widths are 762mm as they can accommodate the most regularly sized door.
Standard inside door sizes.
The door frame manufacturer will then add their standard clearances to these dimensions to give what is called the reveal size.
Generally this will be a 2040 by 920 or 820mm door.
Standard door frame size.
Measure your door carefully and cut the opening to fit using a reciprocating saw.
The door jamb is the frame that installs in the wall and supports the door via hinges.
The size of the door opening will vary depending on the size of the door you plan to install.
Now all you need to know is how to properly frame your door rough opening.
Door frames can be supplied pre assembled or in component parts which can be cut to size to fit all door sizes.
These are important because they must also account for door jamb material to be within their widths.
The rough opening should be at least inch wider and inch taller than the door frame.
Standard interior door jamb thickness on pre hung doors is 4 9 16 inches.
It s common practice for framers to typically add about 2 inches of buffer to the standard so door openings often vary between 36 inches and 38 inches.
The reveal size is the actual opening inside the frame that the doors will sit in.
However the door frame size you require depends on the opening within the wall which can vary from building to building meaning there is no standard door frame size.
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.
The international residential code does not require interior doors to be as large as the main entry door in a house but it still sets minimum height and width.
The average measurement of 36 by 80 inches refers to the door panel itself not including the frame.
The frame extends beyond the panel and is installed into the rough opening.
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 additional room allows for a 3 4 inch top jamb a shim space above the door jamb and the thickness of.
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.