I am struggling to figure out what to do about a firedoor.
I am upgrading to an FD30 door, however, the frame is only 1915mm tall, and I have a door which is 1981mm tall, and the instructions say you must not trim more than 3mm from the top edge and 5mm from the bottom.
I have looked for smaller doors, but cannot find any.
I would be very grateful if someone can advise me whether there is somewhere I can buy a shorter door, or whether building control will likely be OK with me cutting the door down by 70mm.
It's a 4 panel moulded firee door by the way.
Thanks for any help you can give!