Definitions for "Triple glazing"
Keywords:  pane, airspace, sash, glass, glazed
Three panes of glass enclosing two hermetically-sealed air spaces.
A sash glazed with 3 lights of glass, enclosing 2 separate air spaces.
Three panes of glass with two air spaces between, commonly consisting of an insulating glass with a separate storm sash. Also available in an insulating window in a single frame.