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_d2f2aa29-b130-4626-9a5f-378642bd07a4_medium.png?v=1713902380)
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_273ccc33-54cb-47f3-8954-a75bf0dcc9dd_medium.png?v=1713902338)
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_b739c307-590f-48db-91c0-6c35950f1550_medium.gif?v=1713902490)
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_e184f5f4-a412-47f9-be88-922502c98d05_medium.gif?v=1713902285)
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_ed234d17-166f-4f96-b676-a76313b53b04_medium.gif?v=1713902502)
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_a57e7483-c85b-4e72-9c9d-c7f90c3d59d6_medium.png?v=1713902406)
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_cfe9b3f8-9959-45db-85b2-dd4516e24455_medium.png?v=1713902404)
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_b237fe7e-9751-437b-989b-8c0b6871c9e3_medium.png?v=1713902389)
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_3042d926-8f86-4729-82f9-d1993e0fde01_medium.png?v=1713902506)
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_47f47baf-5478-484a-883c-9fbee1878225_medium.png?v=1713902352)
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_4d45eeee-41fe-4f43-9120-6aae0c06d72c_medium.png?v=1713902386)
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_4661aa37-95a4-40b2-b1e1-e099290193c6_medium.png?v=1713902360)
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_673d8201-c072-49f4-acc0-60bd5bf6a0cd_medium.png?v=1713902318)
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_da565685-f298-4b20-92f6-f3f0415b6b9a_medium.png?v=1713902345)
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_c57d2fc1-0ed0-470e-a403-4c1429654278_medium.png?v=1713902499)
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_d73f298e-49fe-48b7-9288-8c1d78892eae_medium.png?v=1713902423)
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_b118f18a-7776-4a28-95f4-1a23003e1444_medium.png?v=1713902432)
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_795b9c87-e913-406c-a95f-c2de76c4070f_medium.png?v=1713902480)
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_257653e7-c654-4a18-9b34-b1be6c7d50a1_medium.png?v=1713902383)
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_1b88a988-121b-4999-bae9-1b80f7c9af45_medium.png?v=1713902317)
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_4ad6b0d8-8c22-4083-ab77-d9dae2b9b498_medium.png?v=1713902290)
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_ef2e5558-64e3-4f7a-a580-560095a758cb_medium.png?v=1713902411)
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_393830d7-599a-475b-a0c7-320235979869_medium.png?v=1713902371)
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_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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