Ewc Rectangular Shape
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 14X30 ND-RSD NC Rectangular Damper | 14X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_753965e3-1f1f-45c4-bfc7-03b38afbd1ef_medium.png?v=1720000463)
14X30 ND-RSD NC | Rectangular Damper | 14X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 14X30 ND-RSD NC
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![EWC Controls 14X18 ND-RSD NC Rectangular Damper | 14X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_182d9c38-adc3-4f5c-89fe-22e771ea61f5_medium.png?v=1720094311)
14X18 ND-RSD NC | Rectangular Damper | 14X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 14X18 ND-RSD NC
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![EWC Controls 12X28 ND-RSD NC Rectangular Damper | 12X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_2f1fcf01-e7a3-48d6-a6c2-1e766957fc55_medium.png?v=1720000402)
12X28 ND-RSD NC | Rectangular Damper | 12X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 12X28 ND-RSD NC
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![EWC Controls 12X20 ND-RSD NC Rectangular Damper | 12X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_50a9d78b-cd36-4e6d-98c8-f7c9d1194852_medium.png?v=1720000423)
12X20 ND-RSD NC | Rectangular Damper | 12X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 12X20 ND-RSD NC
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![EWC Controls 10X30 ND-RSD NC Rectangular Damper | 10X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_149f986f-f3a6-44af-bbcf-81d1760385be_medium.png?v=1720000404)
10X30 ND-RSD NC | Rectangular Damper | 10X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 10X30 ND-RSD NC
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![EWC Controls 10X24 ND-RSD NC Rectangular Damper | 10X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_97f5fd00-0645-4044-9a2e-bad083561df2_medium.png?v=1720000402)
10X24 ND-RSD NC | Rectangular Damper | 10X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 10X24 ND-RSD NC
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![EWC Controls 10X20 ND-RSD NC Rectangular Damper | 10X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_82d5fa68-7f91-43ff-a506-2d178db466cf_medium.png?v=1720000375)
10X20 ND-RSD NC | Rectangular Damper | 10X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 10X20 ND-RSD NC
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![EWC Controls 10X18 ND-RSD NC Rectangular Damper | 10X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_f377afc0-1fff-47c0-a12c-654fe5fcf4b7_medium.png?v=1720000388)
10X18 ND-RSD NC | Rectangular Damper | 10X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 10X18 ND-RSD NC
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![EWC Controls 10x16 ND-RSD NC Rectangular Damper | 10X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_47c218e7-1e7a-4b31-9e38-b8cee134f35e_medium.png?v=1720000398)
10x16 ND-RSD NC | Rectangular Damper | 10X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 10x16 ND-RSD NC
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![EWC Controls 10X14 ND-RSD NC Rectangular Damper | 10X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_377aac28-42eb-4aa3-9042-2323fb6206a3_medium.png?v=1720000388)
10X14 ND-RSD NC | Rectangular Damper | 10X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 10X14 ND-RSD NC
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![EWC Controls 8X26 ND-RSD NC Rectangular Damper | 8X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_43b4b59a-575f-43c5-b492-c1183fe3c7f2_medium.png?v=1719987717)
8X26 ND-RSD NC | Rectangular Damper | 8X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 8X26 ND-RSD NC
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![EWC Controls 8X14 ND-RSD NC Rectangular Damper | 8X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_2912eb7f-567a-4cdd-a975-3750f753dc19_medium.png?v=1720000541)
8X14 ND-RSD NC | Rectangular Damper | 8X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 8X14 ND-RSD NC
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![EWC Controls 30X12 ND-RSD NC Rectangular Damper | 30X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_8935c028-2ef0-485d-b43f-81b9756f6002_medium.png?v=1720000522)
30X12 ND-RSD NC | Rectangular Damper | 30X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X12 ND-RSD NC
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![EWC Controls 28X12 ND-RSD NC Rectangular Damper | 28X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_389d49e9-44c0-436a-bb37-3e4cd6c6d285_medium.png?v=1720094306)
28X12 ND-RSD NC | Rectangular Damper | 28X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 28X12 ND-RSD NC
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![EWC Controls 24X18 ND-RSD NC Rectangular Damper | 24X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_3f59db1a-8882-4d13-9912-866055427136_medium.png?v=1720000507)
24X18 ND-RSD NC | Rectangular Damper | 24X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X18 ND-RSD NC
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![EWC Controls 24X16 ND-RSD NC Rectangular Damper | 24X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_9ed8f441-3c6c-4a54-b02d-e1967386f38f_medium.png?v=1720000547)
24X16 ND-RSD NC | Rectangular Damper | 24X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X16 ND-RSD NC
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![EWC Controls 24X14 ND-RSD NC Rectangular Damper | 24X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_77d4adac-1872-4360-b644-a2eaafb7f076_medium.png?v=1720000516)
24X14 ND-RSD NC | Rectangular Damper | 24X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X14 ND-RSD NC
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![EWC Controls 24X10 ND-RSD NC Rectangular Damper | 24X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_7a151048-b03f-499a-a92c-52add1949bb9_medium.png?v=1720000501)
24X10 ND-RSD NC | Rectangular Damper | 24X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X10 ND-RSD NC
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![EWC Controls 24X8 ND-RSD NC Rectangular Damper | 24X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED] | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_66e50b39-12e9-467b-8c18-c50448937573_medium.png?v=1720000512)
24X8 ND-RSD NC | Rectangular Damper | 24X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED] | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X8 ND-RSD NC
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![EWC Controls 22X22 ND-RSD NC Rectangular Damper | 22X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_af5e23ec-038e-4a4d-a880-cb28992710ca_medium.png?v=1720000482)
22X22 ND-RSD NC | Rectangular Damper | 22X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X22 ND-RSD NC
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![EWC Controls 20X10 ND-RSD NC Rectangular Damper | 20X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_50e1cadd-e7da-4502-b3cf-1fa2cb8ea4cd_medium.png?v=1720094307)
20X10 ND-RSD NC | Rectangular Damper | 20X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 20X10 ND-RSD NC
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![EWC Controls 18X16 ND-RSD NC Rectangular Damper | 18X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_24a22b9b-c776-4c62-8fb4-da3e64745122_medium.png?v=1720000473)
18X16 ND-RSD NC | Rectangular Damper | 18X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 18X16 ND-RSD NC
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![EWC Controls 16X10 ND-RSD NC Rectangular Damper | 16X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c13c7a3d-dad8-4620-9e28-fd4a1bc81340_medium.png?v=1720000442)
16X10 ND-RSD NC | Rectangular Damper | 16X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 16X10 ND-RSD NC
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![EWC Controls 14X12 ND-RSD NC Rectangular Damper | 14X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_51b462ea-060f-4e3b-b520-3b761e576c70_medium.png?v=1720000418)
14X12 ND-RSD NC | Rectangular Damper | 14X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 14X12 ND-RSD NC
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