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Jamison's most popular door offers unique designs, features and benefits that keep it in high demand throughout the industry.

The Dual Speed (DS) operator opens at up to 80" per second.



  • Powertron® Operator:  The most popular power operator in the history of cold storage.  Tested trouble-free through more than 2 million opening/closing cycles.
  • Diamond-Trac® Roller System:This patented system elicits rave reviews from industry experts and customers. It permits a smooth, quiet gliding action unrivaled in any door of its type. Its superior sealing ability is due to its down-and-in motion that pushes the door tightly against the gasketed casing and floor.
  • 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.
  • Extruded aluminum door frame: Provides strength superior to wood.
  • Versatile: Designed to handle applications up to a 100F delta T, and available with many options.
  • Standard panels: White, stucco-embossed #26 gauge galvanized steel, front and back. 
  • 5 year limited warranty

Constructed of Fiberglass for use in harsh environments such as food processing. Contact factory for more information

Fiberglass Bi-Parting Power Fiberglass Single Fiberglass Track Door
Bi-Parting Power Fiberglass Single Manual Fiberglass Single Manual Fiberglass Track Door
  • Specifications

    Cooler Door Specifications:

    Supply where indicated on plans Jamison Mark IV® "DS" Series Power Operated Bi-Parting Horizontal Sliding Cooler Door, with Diamond Trac® System* and PowerTron® Operator.
    Door leaves to have aluminum extruded structure and to be metal clad with #26 gauge white pre-painted stucco embossed steel front and back. Frame (casings and header) to be constructed of aircraft quality aluminum extrusions with white painted finish.
    Door leaves to be filled with 4" of Jamifoam non-CFC polyurethane insulation with an R value of 28 at 40°F. Frame to be insulated with polystyrene inserts.
    Door to be equipped with dual-speed brake motor designed to open door at 80" per second and close door at 40" per second.
    Door leaves to be equipped with low profile pneumatic reversing edge, effective full height and full travel of door. Upon contact, door in closing cycle is instantly reversed to open position.
    Adjustable gasket at sides and head of frame and reversing edges cover gasket to be polyester reinforced; door leaves to have sweep type sill gasket.
    Hardware to have protective coating against corrosion. Automatic opening to be provided with two remote control, spring-cushioned, low voltage pull switches.
    Door power to be 208, 240 or 480 volt AC, 60 Hertz, three phase. (ARCHITECT TO SPECIFY VOLTAGE.) PowerTron® power operator to have all gear drive, and all power controls to be fully enclosed in NEMA 1 control boxes. Visible signal light to show when motor is running. Complete door assembly to be ready for connection to power. (ARCHITECT TO DESIGNATE RESPONSIBILITY FOR FILED WIRING.)

    Freezer Door Specifications:

    Freezer door specifications to be same as cooler door except for these substitutions and additions:
    Supply where indicated on plans Jamison Mark IV® "DS" Series Power Operated Bi-Parting Horizontal Sliding Freezer Door with Diamond-Trac® System* and PowerTron® Operator.
    Provide Frostop heater cables in top, sides, lead edges and bottom of door. Complete device to be assembled, ready for connection to 120 volt, 60 Hertz, single phase AC line.
    Special Notes:
    1. Freezer Door is designed for installation in warm room with temperatures plus 33°F. and above. If door must be mounted in rooms with temperatures of +32°F. and below, contact factory.
    2. When cold room temperature is below -20°F. and /or the relative humidity is greater than 80% on the warm side, Frostop heater cables should be added to the frame/gasket assembly.
    3. If the cold room temperature is below -40°F., or if the temperature difference exceeds 90°F., contact factory.
  • Options & Accessories
    1. Metal cladding can be stainless steel, stucco aluminum, galvanized stucco embossed, galvanized or galvanized steel painted to meet specifications.
    2. Padlocking provisions on front or back of door with safety release on opposite side. (Specify which side with locking.) Safety release feature permits door hardware to be released, thus minimizing possibility of personnel being locked in room.
    3. 6" of insulation for freezer door (R value 42).
    4. Electric eye or motion detector to protect door from truck passage.
    5. Radio control operation from lift truck, 1, 2 or 4 button.
    6. Swinging wicket door.
    7. Digital Motor Controller
    8. Complete NEMA 3, 4, 4X, or 12 requirements.
    9. Electrical reversing edge.
    10. M.I.D. Requirements
    11. View windows: (contact factory for specific recommendations.) 12" x 14" sealed glass unit.
    12. Cooler Door - 2 layer 1" thick
    13. Freezer Door - 3 layer, 1" thick with 120 V.A.C. heat film.
    14. Jambs.
    15. Inside trim.
    16. Mirror image frame.
    17. Floor loop.
    18. Push button operation, single or three button (open - close - stop).
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