DW/144 is the Building Engineering Services Association (BESA) specification for sheet metal ductwork. I believe the current version is the Third Edition 2016.
Hope that helps. Not able to provide a copy though.
DW/144 is the Building Engineering Services Association (BESA) specification for sheet metal ductwork. I believe the current version is the Third Edition 2016.
Hope that helps. Not able to provide a copy though.
Andrew Flewin
ZT260SE #269
The mind is like a parachute, it only functions when open.
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