Ewc Spring return (nc) Spring return
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 16X16 ND-RSD NC Rectangular Damper | 16X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_f2a54041-fc24-4c58-b50e-e694d29e90b2_medium.png?v=1720000442)
16X16 ND-RSD NC | Rectangular Damper | 16X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 16X16 ND-RSD NC
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![EWC Controls 12X12 ND-RSD NC Rectangular Damper | 12X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_25d7e06f-a750-4b82-b13a-619acb30b2b4_medium.png?v=1720000409)
12X12 ND-RSD NC | Rectangular Damper | 12X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 12X12 ND-RSD NC
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![EWC Controls 6 URD-SRE120 N.C. 6 Inch 120V Round Motorized Spring Return Damper Normally Closed | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sr120small-proof_ea8001d4-5783-4dc9-8908-79d9a181aa23_medium.gif?v=1720000547)
6 URD-SRE120 N.C. | 6 Inch 120V Round Motorized Spring Return Damper Normally Closed | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 6 URD-SRE120 N.C.
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![EWC Controls 10 URD-SRE120 N.C. 10 Inch 120V Round Motorized Spring Return Damper Normally Closed | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sr120small-proof_ed03c95b-0d25-4d71-9894-08f371bdeb7d_medium.gif?v=1720000365)
10 URD-SRE120 N.C. | 10 Inch 120V Round Motorized Spring Return Damper Normally Closed | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 10 URD-SRE120 N.C.
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![EWC Controls 8 URD-SRE120 N.C. 8 Inch 120V Round Motorized Spring Return Damper Normally Closed | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sr120small-proof_97241deb-2e62-4bb6-aea9-d285acdb576f_medium.gif?v=1720000571)
8 URD-SRE120 N.C. | 8 Inch 120V Round Motorized Spring Return Damper Normally Closed | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 8 URD-SRE120 N.C.
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![EWC Controls 20X20 ND-RSD NC Rectangular Damper | 20X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_a385675e-7a23-4a51-8470-6b1f82b788c6_medium.png?v=1720000468)
20X20 ND-RSD NC | Rectangular Damper | 20X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 20X20 ND-RSD NC
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![EWC Controls 18X12 ND-RSD NC Rectangular Damper | 18X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_fd56d715-b511-4473-9dad-c870ec158a83_medium.png?v=1720094302)
18X12 ND-RSD NC | Rectangular Damper | 18X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 18X12 ND-RSD NC
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![EWC Controls 16X8 ND-RSD NC Rectangular Damper | 16X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_13f33fc2-e658-424a-89d5-fef457c064aa_medium.png?v=1720094302)
16X8 ND-RSD NC | Rectangular Damper | 16X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 16X8 ND-RSD NC
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![EWC Controls 8X8 ND-RSD NC Rectangular Damper | 8X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_16bc8036-9ba8-4768-ae2d-7a8dc61ac260_medium.png?v=1720000556)
8X8 ND-RSD NC | Rectangular Damper | 8X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 8X8 ND-RSD NC
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![EWC Controls 12X24 ND-RSD NC Rectangular Damper | 12X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_57d78369-e521-47f6-b912-d9f4c52dd2af_medium.png?v=1720000437)
12X24 ND-RSD NC | Rectangular Damper | 12X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 12X24 ND-RSD NC
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![EWC Controls 18X18 ND-RSD NC Rectangular Damper | 18X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_6bd6fbc2-ef03-4e3c-8323-ba587054261a_medium.png?v=1720000447)
18X18 ND-RSD NC | Rectangular Damper | 18X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 18X18 ND-RSD NC
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![EWC Controls 12X8 ND-RSD NC Rectangular Damper | 12X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_fc0794b7-c02d-4fe4-9e8a-0a4aec6e679e_medium.png?v=1720000418)
12X8 ND-RSD NC | Rectangular Damper | 12X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 12X8 ND-RSD NC
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![EWC Controls 10X8 ND-RSD NC Rectangular Damper | 10X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_676a0ad5-93ad-4aa0-99cf-d32fc3e2244d_medium.png?v=1720000398)
10X8 ND-RSD NC | Rectangular Damper | 10X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 10X8 ND-RSD NC
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![EWC Controls 12X16 ND-RSD NC Rectangular Damper | 12X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c7e51a05-fb89-4512-a21f-4bd74e1e56db_medium.png?v=1720000432)
12X16 ND-RSD NC | Rectangular Damper | 12X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 12X16 ND-RSD NC
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![EWC Controls 24X24 ND-RSD NC Rectangular Damper | 24X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_341a5021-a7a9-4ef3-b818-3e5e30af7129_medium.png?v=1720000546)
24X24 ND-RSD NC | Rectangular Damper | 24X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X24 ND-RSD NC
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![EWC Controls 20X12 ND-RSD NC Rectangular Damper | 20X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_961ff94c-81f3-4b3d-8621-82ff614093f9_medium.png?v=1720000491)
20X12 ND-RSD NC | Rectangular Damper | 20X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 20X12 ND-RSD NC
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![EWC Controls 20X8 ND-RSD NC Rectangular Damper | 20X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_4dac8292-e531-4194-8b58-65673c9087e9_medium.png?v=1720000482)
20X8 ND-RSD NC | Rectangular Damper | 20X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 20X8 ND-RSD NC
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![EWC Controls 18X8 ND-RSD NC Rectangular Damper | 18X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_377593b5-8a43-46e5-a1c7-dd8e7384dc13_medium.png?v=1720000527)
18X8 ND-RSD NC | Rectangular Damper | 18X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 18X8 ND-RSD NC
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![EWC Controls 14X8 ND-RSD NC Rectangular Damper | 14X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_042ec81f-54e0-4ecd-983c-63077d2f84c5_medium.png?v=1720000437)
14X8 ND-RSD NC | Rectangular Damper | 14X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 14X8 ND-RSD NC
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![EWC Controls 12X10 ND-RSD NC Rectangular Damper | 12X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_bcef4771-ec51-4756-bb5b-c039f20748e1_medium.png?v=1720000388)
12X10 ND-RSD NC | Rectangular Damper | 12X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 12X10 ND-RSD NC
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![EWC Controls 10X10 ND-RSD NC Rectangular Damper | 10X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_7dfb40a6-46bc-4ce4-a3f2-dc7019f667be_medium.png?v=1720000371)
10X10 ND-RSD NC | Rectangular Damper | 10X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 10X10 ND-RSD NC
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![EWC Controls 18X24 ND-RSD NC Rectangular Damper | 18X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_a537473f-fb9f-4030-ad5f-0d7bc77cbca1_medium.png?v=1720000469)
18X24 ND-RSD NC | Rectangular Damper | 18X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 18X24 ND-RSD NC
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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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