When it's time to give your design vision form and function, the answer is clear: Glass block from Glass Block Sales Inc No other building material combines the timeless beauty, practicality and flexibility of glass block. For nearly 60 years, Glass Block Sales Inc has been a leader in the glass block industry. Our family-operated company is the choice of architects for many reasons. The finest materials available on the market today. The highest professional installation standards. And a focus on long-term customer satisfaction. We are the only Michigan Gold Master Distributor of Pittsburgh Corning Glass Block, the American authority in glass block since 1937. No other line of glass block has Pittsburgh Corning's industry famous quality control. And no other glass block comes in as many styles and sizes, giving you unprecedented design and functional choices. Glass Block Sales Inc offers an extensive inventory of in-stock block sizes and patterns, professional installation and answers to all of your glass block questions. Please call us today for more information.