Pressurization Unit, Purge Unit

Bebco Wall Mounted Dual Blower Building Pressurization Units  

Average Air Volume : 65.24 CFM ~  79.03 CFM

Maxiuam Air Volume : 1370 CFM ~  4633 CFM

Bebco Model WDP Wall Mount Whisper Drive™ 

Model  WDP 12 ~WDP 24 Series 

Pressurization Units are intended for industrial applications and ideal for control rooms, guard stations, 

motor control centers, switchgear buildings, analyzer houses, laboratories and other industrial facility 

structures ranging from small to large buildings with one or more rooms, due largely to their vastly 

superior design. Since Bebco Whisper Drive™ Units can be mounted quickly and easily through a wall 

utout, or mounted to an exterior wall or on a roof and ducted into a room, or building or the fresh air 

intake of a packaged or wall mount HVAC unit, they are also extremely practical retrofit units.

All Bebco Model WDP Whisper-DriveTM Units are equipped with our unique Variable Speed Drive 

Interface (VFDI) Logic Control Boards. These boards provide a wide array of optional control features,

including an emergency shutdown if combustible gas is detected in the intake stack and 

an emergency control override which engages the primary and secondary fans at full speed 

to provide high velocity ventilation if combustible or asphyxiating gases are detected within 

a room or building. These unique features  make Bebco Model WDP Units ideal for analyzer or 

laboratory rooms and buildings that feature normally sealed sample analysis systems or fume hoods, 

and for any other buildings where critical personnel and equipment protection is essential. 

Redundancy is attained by the automatic activation of the secondary fan if the primary fan 

should ever fail, so a single Bebco unit can accomplish multiple purposes! Best of all, a large gauge 

allows easy monitoring of our