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Vacuum Oven 250C 26 Shelf Max 16 CF 5 Sided Heating Vacuum Oven 220V ETL

Introducing the new Ai 250°C max. 26-shelf capacity, 5-sided wall-heating, 16 cu ft vacuum oven, one of the biggest 250°C vacuum ovens on the market! Comes standard with secondary over-temp protection dial, stainless steel tubing, stainless steel vacuum & vent valve, oil-filled vacuum gauge, and 2-year warranty.

Every one of our vacuum ovens goes through a 2-time 24-hour vacuum leak test, and is quality controlled in New Jersey or Nevada before leaving our warehouses.




  • ETL tested to UL and CSA standards.
  • Dual door handles with tension-adjustable latches for exceptional vacuum sealing.
  • New KF25 inlet filter keeps your oven clean at all time (included with oven purchase).
  • All stainless steel internal tubing provides higher ultimate vacuum, holds vacuum 10 times longer, and require minimum maintenance.
  • Oil-filled mechanical vacuum gauge provides more accurate reading, longer gauge life and minimizes shipping damage.
  • All stainless steel vacuum and vent valves gives you cleaner connection, more accurate control and long term durability.
  • 4th gen low proportional gain temperature controllers keep your oven temperature within +/- 1°F accuracy, in either °F or °C.
  • Best choice for the curing and converting of oil extracts. With deep vacuum level, they can operate at temperatures which allow the degassing/purging process to occur rapidly, thus increase productivity and allow for the production of superior quality products with minimal processing time.
  • Dual layer observation window with 3/4″ tempered safety glass.
  • 3″ thermal insulation prevents heat loss and minimizes the enclosure’s outer surface temperature.
  • Easy-to-clean stainless steel interior for exceptional durability and ease of maintenance.
  • A vacuum environment lowers the boiling point (great for processing heat sensitive materials) and reduces drying time for materials like paste or powder which cannot otherwise be easily dried.
  • Built-in alarm alerts you when oven has been shut down by safety circuitry due to out-of-range temperature.
  • Built-in swivel casters with leveling feet.
  • For improved temperature tracking, run the auto-tune procedure as outlined in the manual.
  • All ovens shipped from our New Jersey or Nevada location for quick delivery.
  • 2-year warranty and lifetime US-based parts and service support.
  • Guaranteed US based phone and email assistance within 30 minutes from our engineers.

Manufactured in accordance with

  • UL 61010-1
  • CSA C22.2
  • ISO 9001:2000
  • ISO 12100-1:2003, ISO 12100-2:2003
  • EN1050:1996, EN294:1992, EN60204-1:2006
  • CE

IMPORTANT! NEVER LEAVE YOUR OVEN UNATTENDED WHILE OPERATING. Across International is not responsible for any loss of material inside of the oven.

Vacuum oven specifications

 Electrical requirements  220V +/-10% 50/60Hz 1-PH 27.3A, 6,000 watts
 Chamber  Size: 25.6 x 30 x 35.5″
Material: Stainless steel
Capacity: 16 cubic feet
 Heater  Layout: 5-sided heating
Total wattage: 6,000W
Distribution:  left 860W x 2, right 860W x 2, top 400W, bottom 840W, back 330W x 4
 Temperature control  Controller: low proportional gain, microcomputer PID controlled with LCD display
Range: ambient to 250°C (480°F)
Display units: Fahrenheit or Celsius
Uniformity: ± 7% of setpoint
Dwelling timer range: 1 to 9999 minutes
Heating speed

  • Ambient to 100°C: 40 mins
  • Ambient to 150°C: 1 hour
  • Ambient to 200°C: 2 hours
  • Ambient to 250°C: 2.5 hours
 Vacuum  Ultimate vacuum level: better than 500 microns/millitorrs
(may vary based on your altitude, click here to learn more)
Mechanical gauge range: 0 to 30 inch mercury
Vacuum port: KF25 flange x 1
Vent port: KF25 flange x 1
Vacuum pump: Sold separately
 Weight  Unit: 800 Lbs, shipping: 1200 Lbs
 Dimensions (WxDxH)  Unit: 44 x 38 x 51.5″
Shipping: 50 x 45 x 60″
 Shelves  Shelf size: 25 x 30″ (WxDxH)
Material: aluminum
Style: pan-shape
Capacity: 26 shelves max.
Comes standard with oven purchase: 13 shelves
Total area with 26 shelves: 89 sq ft or 12,857 sq inch
Distance between the most adjacent shelves: 1.25 inches
 Door gasket material  Silicone or Viton
 Observation window  1/2″ tempered safety glass
 Safety  Built-in circuit breaker
Overheat shutoff protection
Secondary over-temp protection dial
 In-door lights  White LED (pre-installed)
 Compliance  ETL tested to UL and CSA standards, ETA 3/2021
 Warranty  2 years

Additional information

Weight 1200 lbs
Dimensions 50 × 45 × 60 in


Across International

Across International is an industry leader in the manufacture of heat treatment, laboratory, and material processing equipment.