Neil ashdown

Hi Tom, Yes, what I have said above applies to fire door leaves. Its important to choose a certificated fire door and then make sure that the other components of the fire door assembly are compatible for use with that door. Certificated fire doors come with instructions and your supplier is able to provide certification so that you can check compatibility and install accordingly. You can check its a certificated fire door by finding the label on the top edge of the door (make sure you leave the label in place so others can check its a fire door). That way you have made best efforts to replicate the fire test evidence for the door (and replicating test evidence is the only way to be confident your fire door will provide the correct fire integrity rating in a fire situation). Regards, Neil.