www.slimliteglass.co.uk

Slimlite Double Glazed Units are a new concept in the construction of a double glazed units which with a 5mm perimeter seal depth and can be glazed into most single glazed windows.

In my browsing through conservation and sites I have just come across this site. They produce double glazed units as thin as 11mm, as well existing frames, they should be suitable for use in conservation areas and listed buildings as well.