Fully Supported Glass For applications such as tabletops made from: wood, marble or other solid material. This can be 6mm Glass for office desks, dining tables, bedside cabinets, small dressing tables and side tables. Unsupported Glass For applications such as frames made from: wood, metal, or other material. 8mm Glass is the minimum thickness recommended unless the framework is very small. 10mm Glass thickness is recommended for larger frames where the Glass is unsupported for over 1 metre between any two supports. Clear plastic pads are available on the Mirror and Glass Accessories page for use on metal frames to prevent scratching of the glass by the metal.