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MPI produces custom steel doors and frames for distribution nationally and internationally. As an active member of the Steel Door Institute (SDI) and the National Association of Architectural Metal Manufacturers (NAAMM), MPI adheres to the manufacturing specifications established by the SDI and the Hollow Metal Manufacturers Association (HMMA) division of NAAMM. Products we produce and sell meet or exceed requirements of specification standards ANSI A250.8 and ANSI A250.4.

MPI offers a wide range of doors and frames in various thicknesses ranging from .042 to .093 steel. Products are manufactured from the highest quality, commercial-grade steel in cold-rolled, A60 galvanneal or G90 galvanneal. Products are manufactured for fire ratings up to three hours positive pressure, including hard-to-find stainless steel doors and frames. Fire-rated products are labeled with an Underwriters Laboratories listing mark to indicate compliance with UL, NFPA, and ASTM specifications. See separate fire-rating listing for additional information.

Utilization of the most up-to-date technological innovations assures production of quality products at competitive prices. Powerful databases and AutoCAD engineering systems aid in information processing. These, along with an experienced engineering staff, allow MPI to offer one-of-a-kind service in the integration of complex hardware types. Often called upon by architectural firms, our staff is available to assist in the design of the most complicated door and frame systems.

Comprehensive Quality Assurance initiatives have been developed and implemented to ensure all products are subjected to rigorous inspection and exacting QA measures before leaving the factory. It is a wide-ranging program encompassing manufacturing processes from order entry through delivery.

Quality and excellence in all phases of operation have brought MPI recognition as a leading manufacturer of custom doors and frames. Custom means every door and frame is carefully handcrafted to exact specifications. We do not pull components from a shelf, modify them, and ship to a job site. When MPI says “custom,” it means fully custom manufactured.




  • We intend to conduct our business in a professional, ethical, and dependable fashion.
  • We will treat our customers, suppliers, and each other with respect and consideration.
  • We will make a commitment to do the very best job we are capable of and expect the same from our coworkers.
  • We will develop partnerships with our customers that require us to constantly improve our products and services to meet and exceed their expectations.

MPI provides quality and reliable products you can count on. In addition, our friendly and professional staff is here to answer any questions you may have about our products or services.

Whether you need a quote on a bid project or expedited delivery on your order, we have what you need at competitive prices. At MPI, our goal is to provide you with courteous, expedient, professional service of the highest caliber.