Window Glossary

Two-sided tape used to secure and seal the glass to the sash.

A glass with a surface compression. When broken, the glass breaks into pebbles instead of shards.

Mechanism that unlocks the sash and allows it to tile in from the main frame.

A sash that can be lifted to the interior and removed for cleaning and is manufactured by welding. Total-Unit U-and R-Values: The U and R values of the window calculated from the average of the center of the glass, edge of glass and frame U and R values. It is the reciprocal of the R value.

A horizontal picture window placed above a window or door.