by mattstan51
@ 29/02/08 - 16:46:50
http://markbrinkley.blogspot.com/2008/02/howarth-triple-glazed-windows.html
http://www.dwell-vent.com/supplyairwindows.html
"This project has now been completed and the architects estimate that although building costs are only 5% more than would be typical, energy savings in the region of 50% are to be expected. Pictures of the completed building will be posted here shortly."
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