User:LaurenceHamilton
From BrainyCP
Double glazing considerably these windows have two panes of glass, AL10 NN11 rather than the traditional single pane. [https://www.repairmywindowsanddoors.co.uk/daventry-windowrepair/ NN11] A layer of gas, CM9 NN11 generally argon, BR3 DA15 or NN14 air is between the two panes and [https://www.repairmywindowsanddoors.co.uk/daventry-windowrepair/ NN11] behaves like an ss12 insulator.
