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Single Fire Door Frame

To calculate the size of your new fire door frame we need to know the height (A) and the width (B) of the door you will be fitting into it.

Your Overall Frame Size

The overall size of a single fire rated frame will be:

Double Fire Door Frame

To calculate the size of your new fire door frame we need to know the height (A) and the width (B) of a single door leaf from the doorset you will be fitting into it.

Your Overall Frame Size

The overall size of a double fire rated frame will be:

 

Please note: fire doors frames are not all manufactured in the same way and we cannot guarantee that your new frame will be the exact dimension of your old frame.

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