- What is the difference between light transmission and lightning?
- What is the difference between single-skin and double-skin?
- What does transparent, crystal and Opal mean?
- What is the difference between illumination and lighting?
- What does polyester, PVC and polycarbonate mean?
- What is the difference between Reaction to fire and external fire resistance?
- What is the difference between a bituminous membrane and a breathing membrane?
What does transparent, crystal and Opal mean?
• Transparent: one can see the shape, not the colour.
• Crystal: one can see the shape and the colour.
• Opal: one can’t see the shape or the colour.