Promotional value expires 180 days after purchase. Amount paid never expires. Limit 1 per person, may buy 5 additional as gifts. Limit 1 per household. Valid only for option purchased. Appointment required; please allow 1-3 weeks for appointment date. Merchant's standard cancellation policy applies (any fees not to exceed Groupon price). Does not include patio doors, tempered glass, safety glass or triple-glazed windows. Valid for windows up to 10 square feet larger windows will incur an additional fee of $2.00 per square foot. Valid only for listed service area. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings