Weight of a double-glazed timber window?

[Rick Bowlby]

Does anyone know roughly how much I could expect a standard timber window with double glazing to weigh, per square metre?

Thanks

[dom]

Most common config is 4/16/4, ie 2 sheets of 4mm glass and a 16mm airgap. 4mm glass is 10Kg per sq metre, so made up unit weight a little over 20kg per sq metre.

[Rick Bowlby]

That's just what I needed, thanks!