MarkIV® “DS” Series Bi-Parting Horizontal Sliding Power Operated Door


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.


Door Features:

  • 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.
  • 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.
  • Gaskets: Tear resistant adjustable frame gaskets.
  • Flexibility: Closer positioning of doorways also provides critical floor and wall space savings.
  • Easy Installation: With track and angles preassembled on our casings, installation is quick and easy.
  • 5-year limited warranty

Available in Fiberglass

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


Bi-Parting Power Fiberglass


Single Manual Fiberglass Track Door


Single Manual Fiberglass


Cooler Door Specifications:

Supply where indicated on plans Jamison Mark IV® Manual Single Leaf Horizontal Sliding Cooler Door, with Diamond-Trac® System*.

Door leaf 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 leaf 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.

Adjustable gasket at sides and head of frame to be polyester reinforced; sill gasket on door to be sweep type.

Hardware to have protective coating against corrosion.

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® Manual Single Leaf Horizontal Sliding Freezer Door with Diamond-Trac® System*.

Provide Frostop heater cables in top, sides, 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 above +33°F. 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.
  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).
Feature Product:
pcav chester va_3_pyramid
PCAV® Push-Thru Conditioned Air Vestibule

A conditioned air vestibule that uses a push-to-open versus a motorized opening.
U.S. Pat. No. 10,921,049 and Patents Pending

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Whether it swings, rolls, slides, uses a curtain of air or RFID technology, a Jamison door is built for performance.

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