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Military Grade Wall & Remote Mount NFPA 496 Building Pressurization Units

Model WDP & RDP
Wall & Remote Mount NFPA 496
Building Pressurization Units

Unit Accessories

explosion-proof building pressurization units, hazardous location building pressurization units, classified area explosion proof building pressurization units

Flexible Intake Ducts

The Model FID Flexible Intake Duct provides a temporary, pliable fresh air duct connection to Bebco Model WDP or RDP Unit.
Model FID is typically utilized in applications where the use of a permanent spiral or rigid pipe stack is not feasible.

When placed properly, the intake housing draws unclassified, fresh air into a Bebco Whisper Drive™ Pressurization Unit
from an unclassified area adjacent to the immediate vicinity.

Bebco provides all necessary accessories to complete your installation easily!

Bebco Whisper Drive™ Building Pressurization Unit Flexible Intake Duct
Click these images to learn more!


Bebco Whisper Drive™ Pressurization Unit Flexible Intake Duct Applications


Model FID
Flexible Intake Ducts
Provides a temporary, pliable fresh air duct connection to Bebco Wall Mount or Remote Mount Pressurization or Ventilation Units.



















Housing Material:

Housing Finish:

Housing Handle:

Housing Screen:


Duct Material:


Duct Clamps:

Duct Diameters:

Duct Lengths:

14 Gauge 304 Stainless Steel

Unfinished, Urethane Paint or Custom Finish

316 Stainless Steel

.047” Wire Diameter x 0.25” Opening
Woven 316 Stainless Steel Mesh

Neoprene Coated Polyester Fabric
w/ Embedded Galvanized Helix

304 Stainless Steel

12”, 16”, 20”, or 24”

25 Feet or Custom Length *

* Ask A Bebco Sales Associate about custom lengths and options!


Open this Accessory’s Technical Bulletin in a separate window!










Bebco Flexible Intake Ducts provide
a fast and sure way to obtain fresh air
when time is of the essence!



Bebco Environmental Controls Corporation
Physical Address: 4725 Lawndale Street, La Marque, Texas 77568
Mailing Address: P.O. Box 68 Hitchcock, Texas 77563
Phone: (844) 397-4822     |   Fax: (409) 935-5819
Office Hours:
 8 AM to 5 PM CST, Monday - Friday
Please visit this site for NFPA 496 UL Classified Enclosure Purging Systems:
Best Purging Systems Corporation

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