You have a choice of glass: 

• Standard Float Glass which is used for general framing projects
• Artglass 99 giving you 99% UV Protection (to help protect your work and stop it from fading)
• Water White Glass (often called invisible glass) because it is so clear it gives you the impression there is no glass present, this glass has both UV protection and Anti-Reflective properties
• Acrylic – Acrylic is around 50% lighter than glass and much harder to break.
• Standard Anti-Reflective Glass