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MDI® Door is a Certified Green Site

Your Source for Architectural & Commercial Grade Doors, Frames, Hardware & Accessory Products

...Standard & Custom Engineered Doors & Frames


Metropolitan's line of HM doors are tough!  Our commitment to quality, continuous improvement through research and development and using only the best materials and leading technology are the keys to making Metropolitan's doors tough.  

The HMD-S steel stiffened (channel-shaped stiffeners) door series is utilized in such applications where added security is required.  These doors are available in a variety of sizes, gauges and elevations (Lites & louvers).  MDI® offers one of the most comprehensive line-ups of HM door cores...and we offerMetropolitan HMD-S Series Steel Stiffened Door most of our cores to be used with steel stiffeners.  Standard doors are available as 1 3/4” (45 mm) thick and are available in 14, 16, 18 and 20 gauge commercial quality (A40 galv.) steel and are reinforced to receive architectural hardware in accordance to ANSI A115 standards.  Our HMD-S steel stiffened doors are also available in stainless steel, and G90 galvanized.  

Bullet resistant, blast resistant and STC (acoustical) door & frame systems are available.


  Four Door Cores Available

  • Honeycomb (HMD-SHC)

  • Polystyrene insulated (HMD-SPS)

  • Polyurethane insulated (HMD-SPU)

  • Fiberglass (HMD-SFG)

HMD-S Series (122 kb)


Need assistance, contact us.

Metropolitan Door Industries Corp.

350 Thorens Avenue

Garden City Park, NY 11040  

MDI® Office Hours:

Monday to Friday

8 am to 5 pm EST

Toll Free: 1-888-634-3667


Local: 516.294.1801

Fax: 516.294.1828

Copyright © 1999-2013 Metropolitan Door Industries Corp.

® MDI and the MDI designed logo are registered trademarks of Metropolitan Door Industries Corp.