Cleanroom Pass-through Boxes

Pass-Through Chambers for the Modern Pharmaceutical Cleanroom
Germfree has leveraged our decades of facility design experience to develop a pass-through (airlock) that is uniquely engineered to meet the demands of a modern pharmaceutical cleanroom. All stainless steel construction with coved interior and exterior corners and a pharmaceutical grade finish make these pass-through boxes the most cleanable and robust on the market.

Germfree’s line of Cleanroom Pass-Through Boxes are designed to facilitate the safe transfer of materials between work areas within a pharmaceutical cleanroom. Sealed pass-through boxes maintain complete environmental separation between work areas. The pass-through box air eliminates cross contamination between work areas during both material ingress and egress.

Model Static / HEPA Purge Interior Dimensions Wall Opening Dimensions
PTAS-1616 Static 16”H x 16”W x 24”D 24.25”H x 31.375”W
PTAS-2416 Static 24”H x 16”W x 24”D 32.25”H x 31.375”W
PTAS-2424 Static 24”H x 24”W x 24”D 32.25”H x 39.375”W
PTAH-1616 HEPA Purge 16”H x 16”W x 24”D 24.25”H x 31.375”W
PTAH-2416 HEPA Purge 24”H x 16”W x 24”D 32.25”H x 31.375”W
PTAH-2424 HEPA Purge 24”H x 24”W x 24”D 32.25”H x 39.375”W
  • HEPA Purge and Static Pass-Through models available
  • All stainless steel construction
    • Fabricated from the most robust materials, Germfree’s cleanroom pass-through boxes are designed to withstand the repeated use and daily cleaning required by a cleanroom facility
  • Coved interior and exterior corners
    • These units are designed to be highly cleanable, both inside and out
  • Gas-tight Construction
  • Supply and Exhaust HEPA Filters
  • HEPA Purge
    • HEPA Purge Models Only – When materials are placed within the pass-through box and the doors are closed, a HEPA-purge cycle is initiated which rapidly exhausts and filters the interior air until it has reached ISO Class 7
  • Mechanical interlocks
    • This system prevents both doors from ever being opened simultaneously
    • HEPA Purge Models Only – The receiving side door will remain locked for the duration of the purge cycle
  • Windows
    • Tempered glass viewing windows allow a clear line of site both within the pass-through box and between rooms
  • Voltage Options
    • System requires 110V, 60Hz, 20-amp hard-wired power connection (230V, 50Hz system available)
    • Optional wall plug 

For use in hospital and pharmaceutical cleanrooms to maintain control of particulates as materials are passed from one room to another. Pass-through boxes reduce traffic within the cleanroom while expediting the transfer of product, supplies and equipment. These units are designed to fit seamlessly into both new and existing cleanroom facilities.


The pass-through box eliminates cross contamination between work areas during both material ingress and egress

Past Germfree Projects

Germfree consistently delivers exceptional cGMP compliant products around the globe. Browse the grid below to see a selection of relevant past projects:

Mobile Hospital Compounding Pharmacy
The remodeling of an I.V. pharmacy presents a range of potentially difficult or costly challenges. During building renovations it is imperative that compounding operations are not interrupted or otherwise negatively impacted
Microbiome Research Modular Cleanroom
Biopharma Projects
This BSL 2+ cGMP Modular Biocontainment Cleanroom Facility is made up of five (5) prefabricated modules (2,000 ft2 / 184 m2 gross area) and is housed within a renovated warehouse structure. The cleanroom is designed to comply with FDA and EU cGMP standards and utilizes a unidirectional process flow.
Alachua, FL
Mobile Viral Vector Production Facility
Biopharma Projects
This Mobile BSL-3 Viral Vector Production Facility is based on quantity 2 semi-trailer chassis (840 ft2 / 79 m2 gross area) and functions as a mobile cGMP cleanroom to facilitate Viral Vector Manufacturing (VVM).
Maryland, USA

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