Stern does not believe customer service is a selling point. Instead, we believe excellent customer service is expected and we live up to that standard. Call us anytime of the day, any day of the week and our sales team will take the time to answer all of your questions. Our reps have seen it all and offer our knowledge to anyone who seeks it. Sealants, hardware, reinforcement, weather stripping and much more. All you need to do is give us a call!