Championship-Caliber Air Distribution
Drop Box Diffusers: A Cost-Effective Solution
Designed for efficiency, drop box diffusers/drop plenum diffusers offer a cost-effective solution for delivering a high volume of conditioned air where it’s needed most.
Applications
Sports Facilities. Retail Centers. Data Centers.
Ideal for large, open spaces such as warehouses, sports facilities, retail centers, and data center applications, drop box diffusers provide a single-point air distribution system with the added benefit of directional airflow control.
Your Trusted Source for Drop Box Diffusers
With a dedication to designing and manufacturing air control products that offer innovation and reliability for commercial HVAC applications, United Enertech offers a range of drop box diffuser/drop plenum diffuser models including:
- 6-way
- Angled face
- Drum louver
- Flat face
- Low profile
- Concentric-supply/return units
View All Drop Plenum Diffusers
Which model is right for your application?
Contact us to discuss your specific facility type and project goals. Our team is here to help!
PRODUCT FEATURE
DPD
Drum Louver Drop Diffuser/Plenums

Model DPD is a drop diffuser plenum that offers drum louvers as diffusers.
- Double Deflection Grilles
- 1" Ultra Lite Duct Liner
- Optional Powder Coated
- Optional Higher Velocities
VIDEO RESOURCE
DPD

United Enertech Manufacturing

From design to completion, we take pride in delivering products that perform. Contact us about your next project requiring drop box diffusers, louvers, dampers, or any of our other quality products!
June 30, 2026