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Service & Support

Jamison is dedicated to delivering prompt and courteous service to all of our customers. That is why we stock most repair parts in our multi-million dollar inventory and can ship stocked parts the same day if the order is received before noon. This is just one more way that Jamison delivers.

Overhead Manually Operated Door Standard Lift



A favorite of industry experts, Jamison’s Overhead Sliders are extremely versatile with design configurations for virtually any application.

Mark IV® Overhead Manually Operated Door Standard Lift


  • Design Excellence: These doors are equipped with a unique "down-and-in" joggle track system that assumes friction-free operation until the last few inches of travel in the closing cycle. Additionally, our vertical and overhead doors employ an automatic locking top latch and counter-balance system for secure, finger-tip operation. 
  • Easy Installation: With track and angles preassembled on our casings, installation is quick and easy.
  • Flexibility: Closer positioning of doorways also provides critical floor and wall space savings.
  • Versatile: Designed to handle applications up to a 100F delta T with many options available.  
  • 5-year limited warranty
  • Specifications
    • Door is filled with 4” Jamison foamed-in-place non-CFC polyurethane insulation, with a minimum R value of 32 at 20F for 4 inch doors per ASTM C-518
    • Extruded aluminum structure provides superior strength.
    • Standard panels are white, stucco-embossed #26 gauge galvanized steel, front and back.
    • Adjustable gaskets at sides and head of frame are polyester reinforced.
    • Hardware and track have protective coating to prevent corrosion.
    • Available as power-operated or manually-operated.
    • 5-year limited warranty
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