NEMA 3R Ventilated Enclosures

Common NEMA Rating for Ventilated, Outdoor Enclosures

NEMA 3R Ventilated Enclosure

NEMA 3R rated enclosures are designed very similar to NEMA 3 enclosures, however 3R enclosures can be ventilated. Enclosure ventilation is typically accomplished through the use of louvered openings to filter the air within the enclosure. When ventilated, the degree of protection provided against windblown dust is diminished. However, this can be offset through the use of screens and/or air filter material placed in back of the louvered openings. Our NEMA 3R enclosures can be an equivalent replacement for the following International Protection Ratings: IP14

Bison Profab Features:

  • Steel, stainless steel, aluminum NEMA 3R enclosure that delivers a market-driven cost savings while going beyond industry expectations in quality and durability
  • The freedom to add a full range of affordable options to NEMA 3R enclosures
  • Fans
  • Thermostats
  • Heaters
  • A/C units
  • Viewing windows
  • Casters
  • Leveling feet
  • Fuse blocks
  • Power panels
  • Lights
  • Switches
  • Filters

NEMA Enclosures Finishes


When an outdoor enclosure installs faster and easier in any weather (thanks to quality that eliminates unplanned amendments on the job site) the time savings yields a profit no lowball quote can match.

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