A Pass Box (also known as a Pass Through, Pass-Through Chamber, or Transfer Hatch) is a specialized cleanroom device designed to safely transfer materials between two controlled environments ,between the same cleanliness level or lower level to higher level cleanroom while preventing cross-contamination. It maintains the cleanliness level, airflow stability, and pressure balance according to ISO 14644–compliant.
Transferring raw materials, samples, or packaged products
Moving tools or components
Handling food ingredients or packaging materials
Professional design & suprior material
Power (Red)& work (Green)indicator,
with Timer
Dynamic with SUS air nozzles,LAF air with diffuser.
Optional UV-C lamp can be built-in
Full stainless steel 304 /316L to meet the GMP factory requirements.
Based on the ISO 14644–14 guidance, equipments are designed for cleanrooms
Flair is Your Reliable Cleanroom Pass through manufacturer
We have more than 18 years of experience in manufacturing high-quality cleanroom equipment, and over 30 engineers are specialized in this field, winning a good reputation in the market.
Contact us you can get free drawing and sample.
With other names such as cleanroom pass through, clean transfer window and transfer hatch; it is widely used in microbiology laboratories , food, pharmaceutical , electronics and semiconductor cleanrooms.
Find answers to frequently asked questions about our products. See the most common topics and more. Any other questions just feel free to contact us.
1.How to install pass boxes?
Tools: Tape measure, level, pencil, utility knife (for drywall), circular saw (for cutting opening), drill, screwdriver set, caulking gun, step ladder.
Materials: Pass box , silicone sealant (cleanroom-grade or non-yellowing), mounting screws or bolts , shims/packers, fire-rated foam (if required), plastic sheeting (to protect unit during installation)
What’s more,Proper installation ensures the pass box functions as intended, maintaining the integrity, safety, and cleanliness of the adjoining spaces.
2. Pass box classifications
Cleanroom pass boxes come with different features and sizes, So It is important to choose the right one for your cleanroom,
There are available in 3 different types,the main differences are the ventilation and contamination filtering.
3. Dynamic pass box working principle
A dynamic pass box is a device with built-in motor and HEPA filter to supply air from Nozzles or diffuser, the air passed through HEPA H13/14 filters is blowing over the material.
They are usually applied to transfer the material between non-cleanroom to cleanroom or between two cleanrooms with different levels.Transfering material from Class D ( ISO 8) to Class C ( ISO 7) would require a Dynamic Pass-Through Hatch.
Air Circulation System and Velocity
4.LAF pass box VS Dynamic pass box
LAF Pass box
with undirectional airflow from diffuser into the side
Dynamic pass box
The airflow is through built-in air nozzles.
