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Window insulation
Answer for the clue "Window insulation ", 14 letters:
double glazing
Word definitions for double glazing in dictionaries
Wiktionary
Word definitions in Wiktionary
n. A system of insulated windows (and doors) having two parallel layers of glass separated by an air space
Longman Dictionary of Contemporary English
Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ A NORTH-EAST double glazing firm has been fined nearly £3,000 for breaches of work safety procedures. ▪ Downing Street's double glazing must have proved invaluable as the camera corps set up camp and squabbled on the doorstep. ...
WordNet
Word definitions in WordNet
n. a window with two panes of glass and a space between them; reduces heat and noise transmission through the window