ewc
We offer over 70 EWC HVAC products, including Bypass Dampers, Damper Controls & Accessories, Rectangular Dampers, Round Dampers, and Zoning Panels.
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![EWC Controls 20X10 PRD 20X10 Rectangular Manual Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/prd_2a659cc6-0407-47a1-9e93-6f841051ba87_medium.gif?v=1720000463)
20X10 PRD | 20X10 Rectangular Manual Bypass Damper | EWC Controls
Brand: EWC Controls
SKU: 20X10 PRD
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![EWC Controls 16X20 ND-RSD NC Rectangular Damper | 16X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_d57493af-7a8d-4a99-b40e-3b21dd539540_medium.png?v=1720000428)
16X20 ND-RSD NC | Rectangular Damper | 16X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 16X20 ND-RSD NC
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![EWC Controls 14X20 ND-RSD NC Rectangular Damper | 14X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_b8ffafe2-7fef-418d-a7fb-57b0796cdccf_medium.png?v=1720000414)
14X20 ND-RSD NC | Rectangular Damper | 14X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 14X20 ND-RSD NC
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![EWC Controls 14X16 ND-RSD NC Rectangular Damper | 14X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_3591725c-5111-41a8-b1c6-84748611e420_medium.png?v=1720000432)
14X16 ND-RSD NC | Rectangular Damper | 14X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 14X16 ND-RSD NC
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![EWC Controls 12X18 ND-RSD NC Rectangular Damper | 12X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_74f25bad-3048-49cf-a6c6-ac8bf459e97c_medium.png?v=1720000404)
12X18 ND-RSD NC | Rectangular Damper | 12X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 12X18 ND-RSD NC
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![EWC Controls 10X22 ND-RSD NC Rectangular Damper | 10X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_bde7bf96-8f66-43df-9515-0392f85a8aee_medium.png?v=1720000447)
10X22 ND-RSD NC | Rectangular Damper | 10X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 10X22 ND-RSD NC
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![EWC Controls 10X12 ND-RSD NC Rectangular Damper | 10X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_379d6605-c8ff-4cef-b3e7-27afb95847b2_medium.png?v=1720094298)
10X12 ND-RSD NC | Rectangular Damper | 10X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 10X12 ND-RSD NC
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![EWC Controls 8X18 ND-RSD NC Rectangular Damper | 8X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_5d072b7b-3b34-4567-8c28-806a1832b501_medium.png?v=1720000552)
8X18 ND-RSD NC | Rectangular Damper | 8X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 8X18 ND-RSD NC
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![EWC Controls 8X14 ND-RSD NC Rectangular Damper | 8X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_2912eb7f-567a-4cdd-a975-3750f753dc19_medium.png?v=1720000541)
8X14 ND-RSD NC | Rectangular Damper | 8X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 8X14 ND-RSD NC
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![EWC Controls 30X30 ND-RSD NC Rectangular Damper | 30X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_8b64c6b4-5e08-46b5-94c0-0e41187e352b_medium.png?v=1720094266)
30X30 ND-RSD NC | Rectangular Damper | 30X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X30 ND-RSD NC
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![EWC Controls 30X20 ND-RSD NC Rectangular Damper | 30X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_a47dc084-de94-4aed-abb0-bb0e0a256705_medium.png?v=1720000527)
30X20 ND-RSD NC | Rectangular Damper | 30X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X20 ND-RSD NC
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![EWC Controls 30X18 ND-RSD NC Rectangular Damper | 30X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_abcd1e21-f744-40ec-bc6b-e0627311abc4_medium.png?v=1719987495)
30X18 ND-RSD NC | Rectangular Damper | 30X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X18 ND-RSD NC
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![EWC Controls 24X12 ND-RSD NC Rectangular Damper | 24X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_12f8adcd-45a6-4574-a02c-f3730c575c1d_medium.png?v=1720000473)
24X12 ND-RSD NC | Rectangular Damper | 24X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X12 ND-RSD NC
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![EWC Controls 22X10 ND-RSD NC Rectangular Damper | 22X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c20c51d9-4c00-42d5-9373-7f60e18a8826_medium.png?v=1720000492)
22X10 ND-RSD NC | Rectangular Damper | 22X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X10 ND-RSD NC
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![EWC Controls 14X14 ND-RSD NC Rectangular Damper | 14X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_0f00f23e-144c-40de-aceb-63b2c2820aeb_medium.png?v=1720000432)
14X14 ND-RSD NC | Rectangular Damper | 14X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 14X14 ND-RSD NC
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![EWC Controls 20X22 ND-RSD NO Rectangular Damper | 20X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_5f988c54-0cd9-440d-ad9a-21480db21643_medium.png?v=1719987790)
20X22 ND-RSD NO | Rectangular Damper | 20X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 20X22 ND-RSD NO
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![EWC Controls 16X20 ND-RSD NO Rectangular Damper | 16X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_9c86dc2b-5d68-4105-89a0-8e3d2cee85b2_medium.png?v=1720000428)
16X20 ND-RSD NO | Rectangular Damper | 16X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 16X20 ND-RSD NO
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![EWC Controls 12X20 ND-RSD NO Rectangular Damper | 12X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_1fc05231-2c3b-4f8c-8468-23f693639b27_medium.png?v=1720000433)
12X20 ND-RSD NO | Rectangular Damper | 12X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 12X20 ND-RSD NO
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![EWC Controls 10X12 ND-RSD NO Rectangular Damper | 10X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_94a9ea21-1871-4b4e-985a-ed3acc34a964_medium.png?v=1720000387)
10X12 ND-RSD NO | Rectangular Damper | 10X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 10X12 ND-RSD NO
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![EWC Controls 8X14 ND-RSD NO Rectangular Damper | 8X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_6fc20fbf-03e7-40b3-a7ac-ee460184e3a0_medium.png?v=1720000556)
8X14 ND-RSD NO | Rectangular Damper | 8X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 8X14 ND-RSD NO
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![EWC Controls 30X30 ND-RSD NO Rectangular Damper | 30X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_7d00116b-82c6-46e5-ad10-023e17b77e6f_medium.png?v=1720000517)
30X30 ND-RSD NO | Rectangular Damper | 30X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X30 ND-RSD NO
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![EWC Controls 30X24 ND-RSD NO Rectangular Damper | 30X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_7655577a-94c4-4c0c-8a5a-94b502edbf6b_medium.png?v=1720000518)
30X24 ND-RSD NO | Rectangular Damper | 30X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X24 ND-RSD NO
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![EWC Controls 24X8 ND-RSD NO Rectangular Damper | 24X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN] | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_816f2d75-5d55-40ba-a3e7-9eb24ad9171b_medium.png?v=1720000478)
24X8 ND-RSD NO | Rectangular Damper | 24X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN] | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X8 ND-RSD NO
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![EWC Controls 20X14 ND-RSD NO Rectangular Damper | 20X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_f01fc4de-2483-4245-90b1-634c896b7fd8_medium.png?v=1720000468)
20X14 ND-RSD NO | Rectangular Damper | 20X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 20X14 ND-RSD NO
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