1.Check that the door fits well onto the latch, without any sticking or excess friction on the door frame.
2.Check the gaps around the top and sides of the door are always less than 4mm when closed. The gap under the door should not exceed 8mm.
3.Check that all door hinges are firmly fixed in place, and there are no missing or broken screws.
4.Check the intumescent seals around the door frame are undamaged and intact.
5.Look for a label or a plug on the top or the side of the fire door.
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