Outdoor Enclosure Air Filters

Rugged filters for alternative / renewable energy applications

Enclosure Filtration Solutions:

  • Solar Inverters
  • DC Converter Cabinets
  • Backup Power Cabinets
  • Battery Energy Storage Systems (BESS)
  • Uninterruptable Power Supply (UPS)
  • Macrocell Wireless Cabinets
  • Pole Mounted Enclosures
  • NEBS Compliant Fiber Cabinets
  • Generators
  • Motor Controls & Drives
  • Switchgear
  • EV Charger DC Power Cabinets
  • Digital Menu Boards
  • Kiosks

Custom Solutions

UAF’s team of dedicated engineers have experience designing protection for a variety of industries. We partner with enclosure manufacturers to offer a custom solution and meet UL, NEMA and IP requirements while allowing for necessary heat dissipation with direct air cooling.

Efficiency and filtration options are available at all levels with our media options, and our hydrophobic and salt fog solutions can improve designs by reducing louver profiles or bulky v-bank filters. Salt fog elimination options are available as well for coastline or marine environments and industries with corrosion requirements.

Core Enclosure Solutions

All length and width dimensions are fully customizable along with mounting options, gasketing, thru holes, pull tabs and more.


Mid-efficiency Quadrafoam and PET Hydrophobic mesh for a cleanable, NEMA 3R filter that carries a UL94 HF-1 flame rating

Weather Resistant

MERV 15 efficiency with a cleanable hydrophobic pre-filter. 2″ nominal and 3″ nominal thicknesses available for improved airflow for IP5X applications

Outside Plant

Made with Telecom standards in mind, this IP65 filter is designed for harsh weather and eliminates salt fog. Pleat depth options are available based on air flow requirements

Why Direct Air Cool?

Lower Cost

Air Conditioners and Heat Exchangers create higher initial costs and are more expensive to maintain.

Energy Efficient

Direct air cooling is the most energy efficient cooling method as compared to Air Conditioning or Heat Exchanging.

Thinner Profile

Recessed filter fans offer a more streamlined look for the end product and reduce overall material usage.

Will DAC Work for my Application?

Our broad suite of media solutions includes electrostatic media, hydrophobic mesh, metal mesh, wire screens and more. For fan-cooled outdoor enclosures with critical components to protect and higher standards to meet, we recommend our PentaVent, Weather Resistant (WR) or Outside Plant (OSP) products. Technical data sheets including pressure drop curves, along with rapid prototype samples are available upon request.

SpecificationPentaVentWeather ResistantOSP
Thickness (Inches).50″1.5″2″
Avg Dust Arrestance91%MERV1599%
IP Rating w/o louvers IP44IP54IP65
Flame RatingUL94 HF-1UL900/UL94 HF-1UL900
Salt Fog ReductionMinimal85%99%
Pressure DropLowMediumMedium
MediaTwo Stage Quadrafoam/Hyrdrophobic meshThree Stage PentaVent/Pleated High Efficency Media comboHigh Efficency Membrane Pleated Media

What Level of Protection Do I Need for My Industry or Application?

Talk to Us

Schedule a consult with a member of our engineering team and allow us to select the right filter for your application. Rapid prototyping is available!

UAF Filtration Products for Power Generation Air Filters

Weather Resistant Air Filters

MERV 15 efficiency with a cleanable hydrophobic pre-filter. 2″ nominal and 3″ nominal thicknesses available for improved airflow for IP5X applications.

PentaVent™ Filters

PentaVent™ is UAF’s thinnest outdoor framed filter offering at .5″ thick and can help your cabinet meet an IP44 or NEMA 3R rating without the use of louvers.

Outside Plant Filters

Custom Outside Plant Air Filters keep dust, water, wind driven rain and salt fog out of electronics enclosures that use fresh air and direct air cooling systems.