Resource Type: Glossary Term

A sealed glass unit made from two or more panes separated by a spacer and air or gas space to improve comfort and energy performance.

Glass designed, treated, or assembled to reduce injury risk when used in doors, shower enclosures, low windows, storefronts, and other hazardous locations.

Safety glass made from two or more glass layers bonded to an interlayer that helps hold broken glass together after impact.

Glass that is heat-treated for added strength but does not meet the same break-pattern requirements as fully tempered safety glass.

Safety glass that is heat-treated to be stronger than annealed glass and to break into small granular pieces instead of long sharp shards.

An older trade term often used by customers to mean large flat glass, especially storefront glass or large window panes.

Flat glass made by floating molten glass over molten metal, creating a smooth sheet that can later be cut, tempered, laminated, coated, or insulated.

Standard untreated glass that has been slowly cooled after manufacturing and can break into sharp shards if impacted.

A broad term for transparent or translucent panels used in a building opening, including glass and certain plastic sheet materials.

The glass or glass-like material installed into a window, door, storefront, skylight, shower enclosure, or framing system.