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Window insulation
Answer for the clue "Window insulation ", 14 letters:
double glazing
Word definitions for double glazing in dictionaries
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
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. ...
Wiktionary
Word definitions in Wiktionary
n. A system of insulated windows (and doors) having two parallel layers of glass separated by an air space