Our EXT HEPA / Carbon series of extraction hoods provides you with the highest level of operator and environmental protection from harmful particulates and chemicals available today. Quality materials, components and workmanship normally associated with high-end models can be found in all of our cost-effective EXT series hoods.


  • Operator Protection
    The airflow is directed away from the operator, into the hood to be filtered. Each EXT size has been successfully ASHRAE 110 tested with excellent results.
  • Particulate & Chemical Filtration
    The ‘HEPA/Carbon’ model filters the contaminated air through both a HEPA filter, rated 99.99% efficient at 0.3 microns, and a chemical filter that is specific to the use of the hood.
  • Independent Operation
    Internal fans direct the air without being ducted to the building system and recirculate the filtered air back into the room.
  • Corrosion Resistant
    Constructed from corrosion-resistant white polypropylene, these hoods are resilient to frequent sanitizing.


  • High Efficiency Particulate Air (HEPA) filter rated 99.99% efficient at 0.3 microns
  • Client-specific carbon filtration
  • Large side windows allow for an abundance of natural light
  • Replace carbon filters quickly and easily
  • Energy-efficient fluorescent lighting
  • Quick-change, disposable pre-filters prior to carbon filter – no tools required
  • Vertical rising, fully counter-balanced face shield


  • HEPA filter pre- or post-carbon filters
  • Service valves
  • Assorted interior finishes
  • GFI Duplex outlets
  • Collar connections for HVAC hook-ups
  • Low flow alarm packages
  • Two-stage carbon filtration


Standard sizes nominally 3’, 4', and 6’.  Custom widths by special order.

Download a PDF order form here:  CUTSHEET

A leader in Building Clean Environments

We are very pleased to announce that as a result of a recent merger of Microzone Corporation and Design Filtration Inc., our two companies have become one entity under the name of Design Filtration Microzone Inc.

This is a very exciting venture for both companies, for our employees, customers, distributors and our supplier partners. Our mission at Design Filtration Microzone Inc. is to provide an excellent customer service experience with the unsurpassed knowledge base and the high level of expertise that our customers and distributors have come to expect. This joining of forces has resulted in a more comprehensive product offering including several new equipment lines to be announced in the coming months.


86 Harry Douglas Drive.Ottawa, Ontario
K2S 2C7 Canada

Telephone: 613-831-8318

Toll Free: 888-636-8609

Fax: 613-831-8321