Skyspacer – Insulated Glass spacer SKYSPACER has produced according to EN Norms as follows, EN 1279-2, EN 1279-3, EN1279-4 , / EN 1279-6. Please see related “U” and other isolation values; Insulated Glass spacer with 5 Different composition in 1 Single Seal: Composition: Skyspacer has 5 separate applications in a single seal ; 3 Mechanical Elements and 2 Butly based chemical compositions. Add To Quote