This could be achieved by fixing an addition 1 2 inch 12mm glued and screwed to the existing door stop.
Fire rated door stop size.
Fire ratings for doors are influenced by but not limited to the following items.
There are many door sizes on the market but our fire doors can from time to time include 1981x610mm 1981x686mm 1981x762mm 1981x838mm and 2032x813mm all of which are 45mm thick if 30 minute rated we then have true metric sizes these are door sizes that are all 2040mm high and are 40mm thick they include 2040x626mm 2040x726mm 2040x826mm.
Frame or lining thickness would usually be tested.
Steel gage of the door example.
A note of warning hang the door first then fix the stops not the other way round.
The planted section should be fixed by pinning or gluing and pinning the stop to the frame.
Simpson offers thousands of choices for fire rated doors including 20 minute fire rated wood doors and mdf doors with fire ratings up to 90 minute.
Maximum doors size for fire ratings is influenced by but not limited to the following items.
20 gage door constructions are approved for smaller door sizes than what is shown above.
In addition heavy fire doors may drop by a millimetre or 2 over time and so tight fitting doors will stop closing and need to be adjusted.
How thick should my fire door frame or lining be.