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For both internal and external applications, DHOI offers a wide variety of hollow metal doors and frames in a range of sizes, styles and gauges. Stock consists of commercial knock-down frames as well as welded hollow metal frames and doors. DHOI maintains an ample stock of fire rated metal doors and frames for specified projects. To fulfill custom specifications in fast-turnaround time, our in-house machine shop modifies doors with lights, louvers and can make hardware preparations. Plus, we offer a variety of specially designed door applications for hospitals, x-ray labs, and acoustical environments. 
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