Ewc Yes Motorized
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 14X20 ND-RSD NC Rectangular Damper | 14X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_9b55f680-6992-4c05-8a0d-b2c1620cc723_medium.png?v=1713902354)
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_db7bb839-f5a8-4b95-b4d0-e2cb947b00a4_medium.png?v=1713902371)
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_f7024c25-1ea2-4d3a-a0e8-e0505b879b0b_medium.png?v=1713902331)
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_8c2b01b1-ddfe-463f-990b-86d93701915b_medium.png?v=1713902391)
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_45ea24b4-e003-4a42-a35f-b8bf737460b0_medium.png?v=1713902297)
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_eeb5dcf2-1672-4f51-91f7-a11921381ec2_medium.png?v=1713902511)
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 8X16 ND-RSD NC Rectangular Damper | 8X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_143c2109-5fe2-4f66-b538-787b76ecc86d_medium.png?v=1713902502)
8X16 ND-RSD NC | Rectangular Damper | 8X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 8X16 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_bfe61570-2c60-47fa-a5dd-7248b802ce23_medium.png?v=1713902460)
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_2b050bcc-2b10-4410-9a29-e8a74b6837fd_medium.png?v=1713902480)
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_20b975a2-86ab-4ff3-bb88-3c2854b0284a_medium.png?v=1713902502)
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_c75d0705-4a1c-44a9-992b-4485c522f5b0_medium.png?v=1713902418)
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 22X16 ND-RSD NC Rectangular Damper | 22X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_1957a863-2cde-4ed9-bfec-bb7d0f95a748_medium.png?v=1713902475)
22X16 ND-RSD NC | Rectangular Damper | 22X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X16 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_0c810f0a-4643-479f-baf3-8a1ae88012b1_medium.png?v=1713902442)
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_4164cd5b-7ea0-442c-b328-296c427c4393_medium.png?v=1713902375)
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_99fff193-edc0-4d25-ae3e-63950e15252c_medium.png?v=1713902537)
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_f65da272-7621-4256-af7d-809514110f4c_medium.png?v=1713902372)
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_688c4dac-73e3-4a50-a6a5-94449a5f0370_medium.png?v=1713902382)
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_2958e693-8c80-4931-a5ca-fe13e1b21232_medium.png?v=1713902312)
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_90879a91-4f48-43d3-a3bf-c9f700058143_medium.png?v=1713902489)
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_f74cefbc-cf3d-4505-8497-e9c36b1a292f_medium.png?v=1713902451)
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_a49100d5-a7f0-4b41-9bed-2cf036ac37e4_medium.png?v=1713902462)
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 30X14 ND-RSD NO Rectangular Damper | 30X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_1d92e4d0-d4ce-427a-b558-05b00a37f067_medium.png?v=1713902451)
30X14 ND-RSD NO | Rectangular Damper | 30X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X14 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_87468f6f-db0d-4c0c-badd-261ae6913249_medium.png?v=1713902427)
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_2ffe9816-cd5d-4f37-b4b4-2b0d5543a23e_medium.png?v=1713902410)
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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