We offer a very aggressive referral program that NO other company offers. Just give our company name to someone you know who needs new windows or siding and if they buy 8 or more windows or siding from us for their home, we will honor our referral policy. K&K Classic Designs is a family owned company that has been in business for 25 years and has remained a Gold Star member of the BBB. Our replacement windows and siding are superior quality and our installation and customer service impeccable. Call Ken at 303-973-1507 for a quote or go to our website: http://kandkklassicdesigns.com