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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 KD & WF Frame Series





  • Welded

  • Knock-down

  • Adjustable knock-down

  • Standard galvanized

  • G90 galvanized

  • Stainless steel

  • STC (Acoustical)

  • Lead-lined (x-ray)

  • Bullet resistant

  • Blast resistant

  • Borrowed-lite windows

  • Side-lites & transoms

  • Thermally broken

  • Mullions & sticks

  • Window wall systems

  • Custom fabrication  


KDF & WF Frame Series (168KB)

Adjustable KD HM Frame (80KB)

Metropolitan Door Industries offers a full range of standard and custom  hollow metal frames in various sizes and profiles.  Steel frames are available for drywall or masonry applications, for new or existing construction in 12, 14, 16 and 18 gauge for commercial 1 3/4” (45 mm) thick doors and in 22 gauge for residential 1 3/8” (35 mm) thick doors.  All standard frames are manufactured from commercial quality (A40 galv.) steel and are reinforced to receive architectural hardware in accordance to ANSI A115 standards.  


Frames are also available in stainless steel, lead-lined (X-ray) and G90 galvanized steel.  Bullet resistant and blast resistant door & frame systems are available.  


  • Standard frames are available as welded (WF) or knock-down (KD).

  • Hinge jambs are prepared and reinforced to receive 4 1/2” x 4 1/2” (114 mm x 114 mm) butt hinges. 

  • Hinge reinforcements can easily be field converted to accommodate heavy weight hinges.

  • Strike jambs are prepared and reinforced to receive one standard 4 7/8” (124 mm) strike in accordance to ANSI A115.1.

  • Hinge and strike jambs are supplied with appropriate wall anchors for installation.

  • On welded frames, all welded joints are ground smooth and touched-up with primer paint to provide a seamless appearance.

  • KD frames come standard with our TS (Tension screw) anchor.

  • Stock WF frames come standard with DWZ (metal stud “Z”) and MAS (Masonry Strap) anchors.




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.