Bahnson Environmental Specialties is now Environmental Specialties, LLC.

Pass-Thru Chambers

Our pass-thru reach-ins provide the ideal solution for moving material to and from clean room environments without the risk of contamination. Whether introducing material into a clean room or moving items between multiple clean rooms, you can count on our pass-thru chambers for the job. Our skilled engineers have developed a sophisticated reach-in chamber that can meet the requirements of delicate environments that house critical products and equipment.

These chambers are suitable for a wide range of applications found in a variety of demanding industries, including:

  • Laboratories
  • Food and drug manufacturing
  • Pharmaceuticals
  • Biotechnology

Versatile Pass-thru Chamber Design

Our reach-in chamber product line includes seven standard models designed to meet virtually any storage need.

  • Temperature and humidity controlled
  • HEPA filtration to help ensure stored products are not at risk of cross contamination
  • Strong volumetric uniformity (horizontal and vertical)
  • Twenty-two-gauge, stainless-steel interior
  • Three-inch, closed-cell urethane insulation to promote superior temperature stability and minimal heat transfer
  • Heavy-duty door hinges, full peripheral magnetic door gaskets, and positive-action latch with lock for a secure, uniform seal
  • Custom trim strips for enclosure finishing
  • Glass doors
  • Stainless steel exterior

We can design our pass-thru chambers to meet a variety of highly specialized requirements, including:

  • Windows for light and visibility into or through chamber
  • Mirrored control to allow verification of internal conditions from either side of chamber
  • NEMA 4X control panel
  • Remote conditioning equipment
  • Indicator lights, alarms, and interlocks
  • Door interlocks
  • Mechanical redundancy (DW and TW)
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Model Specs and Sizes

  • Volume:
    25.2 cubic feet (714 liters)
  • Exterior Dimensions:
    41 x 34.5 x 76.5 inches
  • Shelves:
    4 standard/14 max
  • Four-wire Electrical Volts / Ø / Amps:
    208-230 / 1 / 30
  • Weight Range:
    425 to 750 pounds
  • Volume:
    33.8 cubic feet (957 liters)
  • Exterior Dimensions:
    41 x 34.5 x 91.5 inches
  • Shelves:
    4 standard/19 max
  • Four-wire Electrical Volts / Ø / Amps:
    208-230 / 1 / 30
  • Weight Range:
    450 to 775 pounds
  • Volume:
    55.0 cubic feet (1,557 liters)
  • Exterior Dimensions:
    82 x 34.5 x 76.5 inches
  • Shelves:
    8 standard/28 max
  • Four-wire Electrical Volts / Ø / Amps:
    208-230 / 1 / 30
  • Weight Range:
    1,020 to 1,200 pounds
  • Volume:
    74.2 cubic feet (2,101 liters)
  • Exterior Dimensions:
    82 x 34.5 x 91.5 inches
  • Shelves:
    8 standard/38 max
  • Four-wire Electrical Volts / Ø / Amps:
    208-230 / 1 / 30
  • Weight Range:
    1,020 to 1,200 pounds
  • Volume:
    86.0 cubic feet (2,435 liters)
  • Exterior Dimensions:
    123 x 34.5 x 76.5 inches
  • Shelves:
    12 standard/57 max
  • Four-wire Electrical Volts / Ø / Amps:
    208-230 / 1 / 30
  • Weight Range:
    1,420 to 1,600 pounds
  • Volume:
    114.8 cubic feet (3,251 liters)
  • Exterior Dimensions:
    123 x 34.5 x 91.5 inches
  • Shelves:
    12 standard/57 max
  • Four-wire Electrical Volts / Ø / Amps:
    208-230 / 1 / 30
  • Weight Range:
    1,420 to 1,600 pounds
  • “Thanks again for the support in getting us to this stage eventually – finding an incubator that meets our temperature spec has been a challenge for us for the last few years and this is a significant milestone for the business. Hopefully we will have more good news to report in the new year.”

    Project Engineer, Major Biotechnology Manufacturer

  • “During a recent external audit, an inspector requested the PM/Cal documents for the stability chambers. It was my pleasure to give him the nicely presented binders. I could tell he was impressed.

    Thanks for the great service you have provided for us over the years.”

    Teresa P, Taste Texture and Health, DSM-Firmenich

  • “Environmental Specialties has always provided me with great service. All the individuals I worked with were knowledgeable about ES products and services.  They were highly skilled. I relied on ES for pm, calibration, qualification, repair, chamber sourcing and consultations. I interacted with a lot of your employees.  The feedback was always spot on. They were always smiling and supportive even in the most difficult situations. ES is a great company with good people.”

    Judy S., Senior Laboratory Technical Support Specialist, Merck Wilson

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