On Tue, 3 Oct 2006 at 08:06:25, " wrote:
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.


That's just what I needed, thanks!
--
Rick Bowlby