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I'm refurbing a property at the moment and need to replace some interior doors with 30 minutes fire doors. The existing door heights are 1950mm. The closest door height I can buy seems to be 1980mm, however all the door installation instructions that I have found say that I can only trim a...

Hi, I have two bottle air vents installed on the heating circuit (unvented) of my house. One on the flow side of an unvented cylinder and one on the return side of the cylinder. One of the bottle vents has started leaking slightly so i put the dustcap on it to stop any further leaking (and...