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 20X18 ND-RSD NC Rectangular Damper | 20X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_388d94da-f1ac-42fd-9965-b64a4dc801c5_medium.png?v=1713902427)
20X18 ND-RSD NC | Rectangular Damper | 20X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 20X18 ND-RSD NC
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![EWC Controls 20X16 ND-RSD NC Rectangular Damper | 20X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_58b23f58-da63-4524-bf5d-8f40a17d0fa2_medium.png?v=1713902418)
20X16 ND-RSD NC | Rectangular Damper | 20X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 20X16 ND-RSD NC
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![EWC Controls 20X14 ND-RSD NC Rectangular Damper | 20X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_46f04330-0f6e-4a73-86c6-896191f80ca0_medium.png?v=1713902411)
20X14 ND-RSD NC | Rectangular Damper | 20X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 20X14 ND-RSD NC
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![EWC Controls 20X6 ND-RSD NC Rectangular Damper | 20X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c74c66a2-78c2-41b5-8c8d-959c939146ca_medium.png?v=1713902418)
20X6 ND-RSD NC | Rectangular Damper | 20X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 20X6 ND-RSD NC
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![EWC Controls 18X14 ND-RSD NC Rectangular Damper | 18X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_731a00ca-98b3-4f80-8ada-884fdd7cc756_medium.png?v=1713902418)
18X14 ND-RSD NC | Rectangular Damper | 18X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 18X14 ND-RSD NC
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![EWC Controls 18X10 ND-RSD NC Rectangular Damper | 18X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_e6201bea-482c-4ff7-9550-d1a1f8df9075_medium.png?v=1713902417)
18X10 ND-RSD NC | Rectangular Damper | 18X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 18X10 ND-RSD NC
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![EWC Controls 18X6 ND-RSD NC Rectangular Damper | 18X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_81f71b69-7fb7-44aa-9d3d-52ac26458476_medium.png?v=1713902442)
18X6 ND-RSD NC | Rectangular Damper | 18X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 18X6 ND-RSD NC
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![EWC Controls 16X14 ND-RSD NC Rectangular Damper | 16X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_ffca9f68-5a61-481e-b32f-202d5139e3ea_medium.png?v=1713902398)
16X14 ND-RSD NC | Rectangular Damper | 16X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 16X14 ND-RSD NC
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![EWC Controls 16X12 ND-RSD NC Rectangular Damper | 16X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_e087f5f4-fc96-4f5a-993d-067042fb65e6_medium.png?v=1713902404)
16X12 ND-RSD NC | Rectangular Damper | 16X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 16X12 ND-RSD NC
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![EWC Controls 16X6 ND-RSD NC Rectangular Damper | 16X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_7c924758-5f46-4a06-a102-ae157ff7ac0e_medium.png?v=1713902398)
16X6 ND-RSD NC | Rectangular Damper | 16X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 16X6 ND-RSD NC
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![EWC Controls 12X6 ND-RSD NC Rectangular Damper | 12X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_b03706ee-fdbc-478b-b63c-546c95373344_medium.png?v=1713902361)
12X6 ND-RSD NC | Rectangular Damper | 12X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 12X6 ND-RSD NC
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