PBSC’s transfer hatches, also known as a pass box, pass chamber, or pass through, are among the best on the market. These hatches help reduce the risk of physical movement or transfer of harmful bacteria and pressure loss when transferring equipment between different classification areas, within cleanrooms, or in controlled environments.

The hatches from PBSC are designed for easy cleaning and maintenance, making them great for passing products, equipment, or even paperwork between sterile and non-sterile areas while preserving the integrity of each environment.

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Innovation. Design. Quality

Designed with PBSC’s unique mechanical interlocking door system which comes as standard, meaning that both doors cannot be opened simultaneously. The interlock mechanism ensures hatch “air” is given time to recover before the other door can be opened and is mounted between the two skins of the hatch, to reduce the risk of tamper.

Also available as an electro-mechanical system to provide timed interlocks for air purge and UV light cycles, etc…

This prevents direct airflow, minimizing the risk of contamination and maintaining room pressure during the transfer process.

Interlocking mechanisms ensure that one door remains closed while the other is open, maintaining the integrity of each environment and facilitating a quick transfer of goods between different grades of rooms.

PBSC’s pass through hatches are designed to minimize airflow between the connected environments during material transfer.

The hatch air is “cleaned” following use to either the filtered air level of the supply or the higher classification room.

Made from durable smooth non-porous materials, with a choice of:

Polished stainless steel (standard offering) – The hatch shell is manufactured from satin polished stainless steel of double skin construction, all welds will be ground off and polished to match with internal folded corners.

Phenolic resin – The hatch shell is constructed of 16mm (5/8”) thick, matt white, phenolic resin (High Pressure Laminate HPL) with no visible fixings. Internal junctions are finished with a neat silicone fillet and all external edges will be raised to form a smooth, easily cleaned unit.

Powder-coated steel – The hatch outer shell is manufactured with a powder-coated zintec and the inner shell of the double skin construction is in stainless steel, all welds will be ground off and polished to match with internal folded corners.

Compatible with all types of walls and construction and available with glass or solid doors depending on privacy requirements.

Available with internal support shelves in either glass or stainless steel and stainless steel support frames.

Every hatch comes in various sizes and configurations to accommodate the end user and specific application requirements.

Single or double door configuration options are available including right angle designs.

The refined design is robust and provides easy cleaning and maintenance.

PBSC’s hatches are designed to be easy to clean and maintain. This makes it great for passing products, equipment, or even paperwork between sterile/clean areas and non-sterile/dirty areas.

Following on-site installation, PBSC offers a Planned Preventative Maintenance and Servicing Plan with an extensive after-sales support service, including planned preventative maintenance programs, servicing, and spare parts.



  • Robust Mechanical Interlock as Standard
  • Stainless-Steel or Phenolic Resin Construction
  • Minimal Visible Fixings
  • Robust PBSC Cast Stainless Steel Hinge Assemblies
  • Toughened Glass Door Leaf’s
  • Easy Clean Surfaces
  • Frameless Glass Door Leaf
  • No Internal Protruding Or Recessed Areas
  • 2 or 4 Support Brackets
  • UV Lights


Less risk of lower classification air entering the higher classification room.

The advantages of ventilated hatches are many....

Pass through hatches play a critical role in maintaining the cleanliness of cleanrooms and controlled conditions of environments with different cleanliness requirements. Their use helps ensure that materials and equipment can be transferred between areas without compromising the integrity of each space.

Technical Specification

  • Maximum Clear Height Single & Double Door 1200mm
  • Maximum Clear Width Single Door: 1000mm
  • Maximum Clear Width Double Door: Above 1000mm
  • Please contact PBSC for specific design options.
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  • PBSC reserve the right to introduce changes in performance, configuration and technology, dimension, weights and materials in the course of technical progress. Images may not be accurate.
  • Some of the information/images/equipment described or shown may only be available at extra cost. Features & specifications will vary.


  • Ventilated Air Supply / Extract
  • Fire Resistant
  • Conveyor Systems to Client Specification
  • Internal Support Shelves, Glass or Stainless-Steel
  • UV Lights
  • Electro-Mechanical Interlock System
  • Powder Coated Finish
  • Stainless-Steel Support Frame
  • Service and Maintenance Plans