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Quality Door and Hardware Inc. is the leading online store for Commercial Doors and Hardware. Established in 1988 QDH Inc. is a Veteran owned and operated business. We strive to provide great customer service and have one of the most qualified staff in the industry waiting to help you with all of your commercial door and hardware needs. Call or email us and one of our associates will be happy to provide bulk pricing, custom pricing on items not found on the site, and/or technical expertise. We have a large inventory from manufacturers such as Sargent, Corbin, Yale, Rixson, Norton, Pemko, Townsteel, Detex, Bommer, Arrow, Air Louver, LCN, Hager, Detex, Alarm Lock, KABA, Marks USA, Rockwood, and more.