Promotional value expires 120 days after purchase. Amount paid never expires. Valid only for standard window panes; additional charges for French-pane doors, French-pane windows, see pane-counting guide located on the website. Additional charge for three-story homes, not valid towards condos, apartments, or town homes. Valid only within merchant's regular service areas. Appointment required. Valid only within 20 km. of zip code R3I. Limit 1 per person, may buy 1 additional as gift(s). May be repurchased every 30 days. Valid only for option purchased. 24-hour cancellation notice required. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings