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    Horizontal Air Flow Cabinet OvensHorizontal Air Flow Cabinet Ovens

Horizontal Air Flow Cabinet Ovens

  • Grieve - HA-550, HA-700, HA-850, HX-550 and more
  • Motor control push buttons and on-off heat switch
  • LED pilot lights
  • 5 kA short circuit current rating (SCCR)

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Horizontal air flow ovens provide exceptional temperature uniformity as air flow passes heated air across each shelf level for closely controlled production work.


  • UL Listed Control Panel
  • Meets the Requirements of the Following Standards:
  • NFPA 86 (Standard for Ovens and Furnaces)
  • NFPA 70 (National Electric Code)
  • FM (Factory Mutual)
  • OSHA


  • When processing combustible material fire protection should be considered
  • Processing flammable solvents or vapors requires forced exhaust to provide safety ventilation

Safety Equipment

  • Adjustable manual reset excess temperature interlock to turn off heat on malfunction of main temperature controller
  • Recirculating blower air flow safety switch to turn off heat on loss of recirculated air flow
  • Electrical interlock shuts off heat if power to recirculating blower is interrupted

Electric Heat Includes

  • Separate heating element control contactors to turn off heat on malfunction of main control contactors

Gas Heat Includes

  • Modulating burner for 1000 BTU per cubic foot natural gas at 6” water column pressure – propane available. Inlet 1” NPT
  • Automatic pre-ignition purge period to clear accumulated gas or fumes
  • Push button electric ignition
  • Microprocessor based electronic flame safeguard protection to continuously monitor flame and close gas valves if flame is not present
  • 325 CFM powered forced exhauster to provide combustion venting
  • Exhauster air flow safety switch to close gas valves on loss of venting
  • Two pilot valves to guarantee gas flow to pilot can be stopped
  • High and Low gas pressure switches to confirm safe operating pressure range
  • Two main burner safety shut off valves with valve seat position indicator to assure gas flow to main burner can be stopped
  • Proof of closure switch on one main valve to prevent igniting pilot unless main valve is closed
  • Leak test station at each pilot and main burner valve to allow testing for leakage through valve


  • Digital temperature controller
  • Motor control push buttons and on-off heat switch
  • LED pilot lights
  • 5 kA short circuit current rating (SCCR)


  • Choice of
* Electric or Gas heat
*208 volt, 230 volt or 460 volt, 3-phase, 60 HZ – other input power available
  • All welded construction
  • Durable, electrically isolated, Incoloy tubular heating elements
  • Heat source located in heat chamber to prevent radiant heating
  • High pressure carbon steel recirculating blower
  • Full coverage supply and return duct work with adjustable opposed louvers
  • Adjustable fresh air intake and 4” diameter (6” on Gas Heat) exhaust outlet damper
  • Channel shelf supports prevent shelves tipping
  • Insulated with 10 lbs per cubic foot density rockwool insulation
  • 304 stainless steel interior with plated hardware
  • Aluminized steel exterior with Trilite Green enamel finish
  • Brushed stainless steel control panel face
  • Heavy duty doors with explosion venting latches
  • Fiberglass door gasket with stainless steel spring insert
  • Slip flashing at doorway to allow inner oven to expand without affecting door sealing
  • Fully assembled and factory tested for temperature uniformity


Standard & custom-made Grieve ovens in action

*** CAUTION:  Ovens processing combustible material are required by National Fire Protection Association 86 Standard for Ovens and Furnaces (NFPA 86) to have a fire suppression system.  If flammable solvents or vapors are present in an oven, OSHA requires conformance with NFPA 86 Class A Oven requirements.  A powered forced exhauster and other non-standard safety equipment must be added.

HA-55020" x 20" x 20"4.640" x 36" x 58"550°F4006Not Rated6"±0.3%±4°F2012805 lbs
HA-70020" x 20" x 20"4.644" x 40" x 62"700°F4008132,0008"±0.3%±5°F2215970 lbs
HA-85020" x 20" x 20"4.644" x 40" x 62"850°F600½10132,0008"±0.3%±7°F40251,030 lbs
HX-55038" x 20" x 26"11.458" x 36" x 64"550°F600½8132,0006"±0.3%±4°F37241,375 lbs
HX-70038" x 20" x 26"11.462" x 40" x 68"700°F600½10132,0008"±0.3%±5°F33211,505 lbs
HX-85038" x 20" x 26"11.462" x 40" x 68"850°F600½15132,0008"±0.3%±7°F45271,555 lbs
HB-55038" x 26" x 38"21.758" x 42" x 76"550°F600½10132,0006"±0.3%±4°F38221,590 lbs
HB-70038" x 26" x 38"21.762" x 46" x 80"700°F600½15132,0008"±0.3%±5°F40241,900 lbs
HB-85038" x 26" x 38"21.762" x 46" x 80"850°F800¾20200,0008"±0.3%±7°F45301,950 lbs
HZ-55038" x 26" x 50"28.658" x 42" x 88"550°F800¾15132,0006"±0.3%±4°F40241,975 lbs
HZ-70038" x 26" x 50"28.662" x 46" x 92"700°F800¾20200,0008"±0.3%±5°F42272,305 lbs
HZ-85038" x 26" x 50"28.662" x 46" x 92"850°F1,000130200,0008"±0.3%±7°F44362,455 lbs
HY-55038" x 38" x 38"31.858" x 54" x 76"550°F800¾15132,0006"±0.3%±4°F42252,180 lbs
HY-70038" x 38" x 38"31.862" x 58" x 80"700°F800¾20200,0008"±0.3%±5°F44292,540 lbs
HY-85038" x 38" x 38"31.862" x 58" x 80"850°F1,000130200,0008"±0.3%±7°F46382,710 lbs
HC-55050" x 50" x 50"72.374" x 66" x 90"550°F2,4501 ½30200,0006"±0.3%±4°F25243,485 lbs
HC-70050" x 50" x 50"72.376" x 68" x 92"700°F2,4501 ½40200,0008"±0.3%±5°F30293,905 lbs
HC-85050" x 50" x 50"72.378" x 70" x 94"850°F3,300260350,0008"±0.3%±7°F30254,230 lbs