Dampers (hidden without zone panels) EWC Controls
Zone dampers for HVAC systems without zone control panels. Order Individual 24V motorized dampers for creating HVAC zones today at Blackhawk Supply.
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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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![EWC Controls 16X14 ND-RSD NO Rectangular Damper | 16X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_81d9b530-b070-4645-9128-38d13b0cf9b1_medium.png?v=1713902395)
16X14 ND-RSD NO | Rectangular Damper | 16X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 16X14 ND-RSD NO
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![EWC Controls 16X8 ND-RSD NO Rectangular Damper | 16X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_8e023a83-46fc-4a00-a607-86ce678f2054_medium.png?v=1713902410)
16X8 ND-RSD NO | Rectangular Damper | 16X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 16X8 ND-RSD NO
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![EWC Controls 12X12 ND-RSD NO Rectangular Damper | 12X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c94a2422-9dd3-4abf-a8a6-6eb0d32d1ed4_medium.png?v=1713902394)
12X12 ND-RSD NO | Rectangular Damper | 12X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 12X12 ND-RSD NO
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![EWC Controls 12X6 ND-RSD NO Rectangular Damper | 12X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_1052d306-0f6c-4c43-8be0-cc55a41c7205_medium.png?v=1713902358)
12X6 ND-RSD NO | Rectangular Damper | 12X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 12X6 ND-RSD NO
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![EWC Controls 10X6 ND-RSD NO Rectangular Damper | 10X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_59530bd4-b39e-4fe0-a88e-893cdc507a76_medium.png?v=1713902366)
10X6 ND-RSD NO | Rectangular Damper | 10X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 10X6 ND-RSD NO
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![EWC Controls 14X16 ND Rectangular Damper | 14X16 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/nd_f9deb5ae-88eb-4d55-a775-dbd3bc2f60d7_medium.png?v=1710946384)
14X16 ND | Rectangular Damper | 14X16 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 14X16 ND
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![EWC Controls 12X20 ND Rectangular Damper | 12X20 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/nd_4ec954ee-dd08-4c99-89dd-e2c7a4682e6d_medium.png?v=1710946385)
12X20 ND | Rectangular Damper | 12X20 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 12X20 ND
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![EWC Controls 10X22 ND Rectangular Damper | 10X22 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/nd_34e46888-d9a0-4d6c-ab0d-030ed82ccc80_medium.png?v=1710946377)
10X22 ND | Rectangular Damper | 10X22 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 10X22 ND
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![EWC Controls 8X30 ND Rectangular Damper | 8X30 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/nd_291be8c3-a5fa-4d3c-8fbd-e8f8e49112d0_medium.png?v=1710946410)
8X30 ND | Rectangular Damper | 8X30 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 8X30 ND
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