
Need an effective airflow solution for large, open spaces?
Warehouses, Data Centers, and Other Large Spaces
Drop Box Diffusers provide a single-point air distribution system with the added benefit of directional airflow control - making them ideal for large, open spaces such as warehouses, sports arenas, retail centers, and data center applications, like the project shown above. Designed for efficiency, drop box diffusers are generally easy to install and offer a cost-effective solution for delivering a high volume of conditioned air where it’s needed most.
United Enertech offers a wide array of drop box diffusers/drop plenum diffusers including:
- Concentric-supply/return units
- 6-way drop diffusers/plenums
- Rotating plenum diffusers
- Heavy-duty industrial diffuser products
Project Showcase
Project Type: Data Center
Location: Phoenix, AZ

This data center project focused on sustainability and large-scale deployments, featuring multiple facilities. The campus is designed to support the dynamic growth of technology-driven organizations within the region. United Enertech drop box diffusers, which provide single point air distribution system with the added benefit of allowing directional airflow, were utilized on this project.
Visit our Project Showcase page to view this and other projects.
UE Manufacturing

We're ready to get started on your next order!
From design to completion, we take pride in delivering products that perform. Built on quality, driven by reliability - let us help make your next project a big success. 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

Model DPD is a drop diffuser plenum that offers drum louvers as diffusers. This model can be custom built up to 100,000 cfm.
- Double Deflection Grilles
- 1" Ultra Lite Duct Liner
- Optional Powder Coated
- Optional Higher Velocities
6-Way Drop Diffuser/Plenum

- Model DPD-6 is drop plenum diffuser with 6 sides that have double deflection drum louvers as diffusers.
- Standard construction is from G90 galvanized steel and a 1 duct liner.
- Can be custom built for up to 100,000 cfm.
June 24, 2025