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My UPvc back door needs replacing on my house built around 1970's.
I looked on line and found loads of different door designs and they appeared to be in a number of standardized sizes.
I measured the door and find it to be an unusual size. The height is 2040mm which appears to be a normal size but the width is 840mm which I can't seem to find.
These measurements are from the brickwork opening in which the door casing sits.
Is this unusual? Have the standardized sizes for doors changed over the last 50 years or so?
Any info greatfully received.
I looked on line and found loads of different door designs and they appeared to be in a number of standardized sizes.
I measured the door and find it to be an unusual size. The height is 2040mm which appears to be a normal size but the width is 840mm which I can't seem to find.
These measurements are from the brickwork opening in which the door casing sits.
Is this unusual? Have the standardized sizes for doors changed over the last 50 years or so?
Any info greatfully received.