UE May 2024 email banner

Why do drop box diffusers work well in large spaces?

Does your application require long throws?

From sports arenas to industrial facilities, Drop Box Diffusers provide a single point air distribution system with the added benefit of allowing directional airflow. Our drop box diffusers are designed for high-capacity output for applications that require long throws, such as warehouses, sports arenas, large retail facilities, and other buildings with expansive spaces.

United Enertech offers a wide array of drop box diffusers/drop plenum diffusers for the commercial, industrial, and power generation markets, including concentric-supply/return units, 6-way drop diffusers/plenums, rotating plenum diffusers, and heavy-duty industrial diffuser products.

View All Drop Plenum Diffusers

UE Manufacturing

Made in the USA

UE Dropbox Manufacturing
We're ready to get started on your next order!

United Enertech takes great pride in our manufacturing - from design to delivery, our team is here to ensure quality, performance, and reliability every step of the way. Contact us about your next project requiring drop box diffusers, louvers, dampers, or any of our other quality air movement & control products!

Product Features


Drum Louver Drop Diffuser/Plenums

  • The DPD is a drop diffuser plenum that offers drum louvers as diffusers.
  • This model can be custom built up to 100,000 cfm
DPD Product


6-Way Drop Diffuser/Plenum

  • The DPD-6 is a drop plenum diffuser with 6 sides that has double deflection drum louvers as diffusers.
  • Standard construction is from G90 galvanized steel and a 1 duct liner.
  • The DPD-6 can be custom built for up to 100,000 cfm.
UE dpd 6