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  • CSB-WB
The Aldes CSB3-WB Constant Supply Box is a wall register box which incorporates an automatic, pressure independent balancing damper that regulates supply airflow in duct systems to constant levels. The passive control element (CAR3) in the CSB3-WB requires no electric or pneumatic power, sensors, and works solely off system pressure. Each CSB3-WB includes mounting brackets, and all necessary hardware for installation.

The CSB3-WB compensates for changes in duct pressure caused by stack effect, operable windows and doors, wind, loading filters, etc. The CSB3-WB provides a low-cost solution to maintaining the correct airflow balance of ventilation systems, improving system performance and indoor air quality, and provides significant savings on annual operating costs.
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Collar Diameter (in)

Nominal Grille Width (in)

Nominal Grille Height (in)

Item #

Airflow Range

Collar Diameter

Nominal Grille Width

Nominal Grille Height

N/A 15 to 85 cfm N/A 4 in N/A 6 in N/A 4 in
N/A 15 to 85 cfm N/A 4 in N/A 6 in N/A 6 in
N/A 15 to 85 cfm N/A 4 in N/A 8 in N/A 4 in
N/A 15 to 85 cfm N/A 4 in N/A 8 in N/A 6 in
N/A 15 to 85 cfm N/A 4 in N/A 8 in N/A 8 in
N/A 15 to 85 cfm N/A 5 in N/A 6 in N/A 4 in
N/A 15 to 85 cfm N/A 5 in N/A 6 in N/A 6 in
N/A 15 to 85 cfm N/A 5 in N/A 8 in N/A 4 in
N/A 15 to 85 cfm N/A 5 in N/A 8 in N/A 6 in
N/A 15 to 85 cfm N/A 5 in N/A 8 in N/A 8 in
N/A 35 to 180 cfm N/A 5 in N/A 6 in N/A 4 in
N/A 35 to 180 cfm N/A 5 in N/A 6 in N/A 6 in
N/A 35 to 180 cfm N/A 5 in N/A 8 in N/A 4 in
N/A 35 to 180 cfm N/A 5 in N/A 8 in N/A 6 in
N/A 35 to 180 cfm N/A 5 in N/A 8 in N/A 8 in
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