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Say hello to a corrosion-resistant alternative to steel and aluminum.

Made from engineered polymers, our Stratus Plastic Diffusers are designed to outperform and outlast comparable metal diffusers. In fact, this revolutionary new product won’t rust, fade or corrode due to its unique properties. Plus, it’s a cost-effective option! Available in Cone or Plaque, Stratus Plastic Diffusers also features an extra tall neck for easy installation.


Stratus - Cone

Available in White and Black


  • No rust, no corrosion
  • Won't fade or yellow
  • Scratches don't show
  • No painting or repainting
  • Won't bend
  • Mildew resistant

Easy Installation

  • 50% lighter than metal
  • Extra tall neck - 2 3/8"
  • No cut fingers/sharp edges
  • Drop/damage resistant
  • Compatible with standard duct and damper sizes

High Performance

  • Air flow consistent with metal
  • Antistatic
  • Resists sweating
  • Flame Resistant, meets UL94HB flame spread test
  • Fire rated version available,  Meets UL 2043, Test for Fire, Heat, & Smoke for air handling spaces


  • Consistent smooth finish
  • More dimensionally stable
  • Indistinguishable from metal when installed

Optional Thermal Blanket

  • R6 thermal resistance
  • fiberglass insulation
  • comes preattached to diffuser
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Stratus Cone Plastic Diffuser White
  • Stratus Cone Plastic Diffuser White
  • Stratus Cone Plastic Diffuser Black
  • Optional Thermal Blanket

Better than metal diffusers, they're plastic!
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