Standard Door Sizes

Within England and Wales, the most common door height is 1981mm (6’6”)
Scotland most commonly use a metric equivalent that is slightly taller at 2040mm

The average width of an internal door within England and Wales us 762mm (2’6”)
Scotland usually opt for a metric equivalent that is slightly smaller at 726mm

Measure inside the door frame, across the width (top, middle and bottom) and take the widest measurement to determine the required door width.

The same applies for the door height. Measure inside the vertical side of the frame and the longest length determines the height required.

For more details, see How to measure for a new door

The most common door frame width is 762mm in England /Wales and 726mm in Scotland to accommodate the most popular door sizes of the same size.

Door frames can be supplied pre-assembled or in component parts which can be cut to size, to fit all door sizes. 

We would always advise using the services of a professional Joiner, as fitting a door frame is precise work and is trickier than it looks.

Start by measuring the opening size and divide the width by two to give an approximate width for each door.  If the frame is not already fitted, you need to allow for this (most common frame width is 30mm both sides), as well as some tolerance for fitting (approximately 2-3mm each side).

Opening width – Frame width (e.g. 60mm) – Fitting adjustment (6mm) = Double door width ÷ 2 = Single door width

Compare the Single door width with the sizes available in your chosen design to determine whether a standard option will work or if you require bespoke made to measure doors.

When fitting double doors, you also need to consider how you would like the doors to meet in the middle.  E.g. square or rebated meeting stiles.   See How to Create a Door Pair for more information.

Fitting double doors is not straight forward and we would always advise using a professional Joiner to help you achieve the perfect fit.