• WindMaster® Sign Stands
    PosterGrip® Snap Open Frames
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  • Roll-Up Signs
    PosterGrip® Snap Open Frames
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  • MDI Compact® Sign System
    PoleWorks® 2.0 Merchandising
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  • DuraLatch®
    Crossbracing
    Banner Track and Poster Display Tracks
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  • Other Sign Holders, Brackets, 
    Wooden Dowel Flags
    Pump Toppers, Pole Signs, Bollard Signs
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  • Traffic Cones &
    Pi-Lit Smart Flares
    Pump Toppers, Pole Signs, Bollard Signs
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  • Safety Vests
    Pump Toppers, Pole Signs, Bollard Signs
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  • Stop/Slow Paddles
    & Sign Covers
    Pump Toppers, Pole Signs, Bollard Signs
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  • Storage Bags & Boxes
    Pump Toppers, Pole Signs, Bollard Signs
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  • OSHA Warning Signs
    OSHA Warning Signs
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  • Work Zone Traffic Control
    Reference Guides & Training
    Pump Toppers, Pole Signs, Bollard Signs
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Specials / Close Out Items

Special deals we occasionally offer to you.

  • IMSA Speakmaster Article

    Check out this article featured in IMSA newsletter

 

MDI Construction & Utility
MDI is committed to keeping road crews and utility workers safe while working in the roadway. We have designed and manufactured a complete line of products to help significantly improve work zone safety through our highly-effective WindMaster® sign stands and roll-up signs.

The MDI invented WindMaster® sign stand has been the industry standard since 1975. It will provide years of dependable service. With a choice of over 17 different styles and deployment options of 1’ to 7’ from ground surface. WindMaster is proudly manufactured at our headquarters in Farmington Hills, Michigan.