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- 23 Apr 2004
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We have just moved in a house that has hot air heating system, the top of each door is a window but the window has a 1" gap at the bottom. I assumed this must be for the air to get around the rooms......... but then i remembered that my nan had the same system but none of the rooms had this gap above the doors?
Are they really needed?
thanks
Are they really needed?
thanks