Why choose interinterior exterior building supply? Interior Exterior Building Supply is dedicated to the customer, delivering your drywall and other building materials where and when you want them. Find the Nearest INEX Drywall Supplier You!Why choose exexterior supply? Exterior Supply is proud to offer an extensive line of exterior products to meet the needs of everyone from the professional to the do it your-selfer. Please use the quick links below or above to quickly navigate to the product or service you are looking for!What is the philosophy of interior supply? “Our philosophy at Interior Supply has always been one that ensures that our clients, our manufacturers, and our team have what they need to succeed – and it makes for a winning equation. And no matter where you fit into that equation, you know that Interior Supply is there for you.How long does interior supply take to deliver? Thanks to multiple locations throughout Ohio, western Pennsylvania, and Indiana, we strive to maintain a 95 percent delivery rate within two business days. Quality service is always top of mind at Interior Supply, and it’s the driving force behind our continued success.