When talking door frames, it is often difficult to get your head around the different terms that people tend to use.
This doesn’t need to be the case.
It is actually surprisingly simple.
The most basic starting point is the Door size that a frame is being built to fit. Generally this will be a 2040 by 920 or 820mm door. The door frame manufacturer will then add their standard clearances to these dimensions to give what is called the Reveal Size.
The Reveal size is the actual opening inside the frame that the doors will sit in. So in the case of a 2040 x 920mm door, the standard reveal size would be 2055 x 924mm. This allows 15mm height clearance for floor coverings and 4mm clearance width ways.
So for all the perfectionists out their who like to determine their own clearances, the reveal size is for them!
Finally, the Overall size. This measurement is commonly used for frames which are ‘retro-fit’ (fitted after the wall has been constructed). The Overall size is the outside measurement of the frame. Frames which are built to suit the opening in a wall, are often ordered using the overall size.
So if the architects are asking for a 2100mm overall height and a 1000mm overall width….what door size will be needed to suit this?
Here’s the Maths:
Standard frames have an architrave of 38mm. So the first step is to simply subtract 38mm from the overall height.
This is the Reveal height.
Then we subtract the 15mm clearance for floor coverings etc.
This is the door size.
Now for the width. There are two 38mm architraves so we subtract both to get the door size.
1000-38-38= 924mm reveal
924 – 4mm clearance= 920 door
Now you have it mastered, would you like to test your skills by getting a door frame quote?
Please share your wisdom with others…