ewc
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 8X30 ND-RSD NO Rectangular Damper | 8X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_2c37155c-3007-4c96-b4a1-6c41954bac77_medium.png?v=1720094320)
8X30 ND-RSD NO | Rectangular Damper | 8X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 8X30 ND-RSD NO
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![EWC Controls 8X12 ND-RSD NO Rectangular Damper | 8X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_6cb50942-3919-4fdd-bad5-70e7ca9be361_medium.png?v=1720000551)
8X12 ND-RSD NO | Rectangular Damper | 8X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 8X12 ND-RSD NO
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![EWC Controls 8X10 ND-RSD NO Rectangular Damper | 8X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_151fd970-b08e-4aed-ae0d-fa4982267f65_medium.png?v=1720000526)
8X10 ND-RSD NO | Rectangular Damper | 8X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 8X10 ND-RSD NO
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![EWC Controls 26X8 ND-RSD NO Rectangular Damper | 26X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_4158863a-7136-4eac-a02a-6a255ac5538a_medium.png?v=1720000492)
26X8 ND-RSD NO | Rectangular Damper | 26X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X8 ND-RSD NO
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![EWC Controls 24X14 ND-RSD NO Rectangular Damper | 24X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_516b21c2-2824-4910-a8a7-a24eccc69f21_medium.png?v=1720000506)
24X14 ND-RSD NO | Rectangular Damper | 24X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X14 ND-RSD NO
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![EWC Controls 22X20 ND-RSD NO Rectangular Damper | 22X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_95acb80d-fd0b-40b5-9cd9-f390ba713bde_medium.png?v=1720000492)
22X20 ND-RSD NO | Rectangular Damper | 22X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X20 ND-RSD NO
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![EWC Controls 22X14 ND-RSD NO Rectangular Damper | 22X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_7d4d8cc5-015a-4224-8815-1e0708f896fc_medium.png?v=1720000482)
22X14 ND-RSD NO | Rectangular Damper | 22X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X14 ND-RSD NO
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![EWC Controls 20X20 ND-RSD NO Rectangular Damper | 20X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_efb02378-9bf5-4a9b-947c-3d3a41e56d0e_medium.png?v=1720000487)
20X20 ND-RSD NO | Rectangular Damper | 20X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 20X20 ND-RSD NO
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![EWC Controls 20X12 ND-RSD NO Rectangular Damper | 20X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_5806f064-ba28-43ca-88fe-209ba4cb5b79_medium.png?v=1720000478)
20X12 ND-RSD NO | Rectangular Damper | 20X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 20X12 ND-RSD NO
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![EWC Controls 20X8 ND-RSD NO Rectangular Damper | 20X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_e4f8e292-9521-46db-982b-44cdf85755fb_medium.png?v=1720094293)
20X8 ND-RSD NO | Rectangular Damper | 20X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 20X8 ND-RSD NO
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![EWC Controls 18X6 ND-RSD NO Rectangular Damper | 18X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_21484158-c088-47ce-add4-c0be00e84aba_medium.png?v=1720000463)
18X6 ND-RSD NO | Rectangular Damper | 18X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 18X6 ND-RSD NO
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![EWC Controls 16X16 ND-RSD NO Rectangular Damper | 16X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_97ad10a4-b5e6-44ab-841a-509fe95ffc3a_medium.png?v=1720000436)
16X16 ND-RSD NO | Rectangular Damper | 16X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 16X16 ND-RSD NO
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![EWC Controls 16X10 ND-RSD NO Rectangular Damper | 16X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_42dd0429-39b9-4f1b-a7ae-35aba5a9d431_medium.png?v=1720000487)
16X10 ND-RSD NO | Rectangular Damper | 16X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 16X10 ND-RSD NO
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![EWC Controls 14X14 ND-RSD NO Rectangular Damper | 14X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_65595812-b6c5-4f24-a3c7-9855a6a86355_medium.png?v=1720000447)
14X14 ND-RSD NO | Rectangular Damper | 14X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 14X14 ND-RSD NO
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![EWC Controls 14X12 ND-RSD NO Rectangular Damper | 14X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_d0ce1a9f-335d-4ea0-8ac4-8eb7f86a1701_medium.png?v=1720000432)
14X12 ND-RSD NO | Rectangular Damper | 14X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 14X12 ND-RSD NO
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![EWC Controls 14X10 ND-RSD NO Rectangular Damper | 14X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_63c32f11-21e6-4387-a250-14d62d12967e_medium.png?v=1720000418)
14X10 ND-RSD NO | Rectangular Damper | 14X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 14X10 ND-RSD NO
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![EWC Controls 14X8 ND-RSD NO Rectangular Damper | 14X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_a42d8f67-9dac-4ad7-ad14-65bbf026b29b_medium.png?v=1720000432)
14X8 ND-RSD NO | Rectangular Damper | 14X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 14X8 ND-RSD NO
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![EWC Controls 14X6 ND-RSD NO Rectangular Damper | 14X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_9c7d526e-45ba-446b-b070-c33d7ea5c755_medium.png?v=1720000433)
14X6 ND-RSD NO | Rectangular Damper | 14X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 14X6 ND-RSD NO
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![EWC Controls 10X10 ND-RSD NO Rectangular Damper | 10X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_ec3fbfd0-9131-4d0d-b30b-7964cf8381c1_medium.png?v=1720094289)
10X10 ND-RSD NO | Rectangular Damper | 10X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 10X10 ND-RSD NO
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![EWC Controls 18X22 ND Rectangular Damper | 18X22 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_2433afc3-672a-46ec-ab73-2a90025f4c7f_medium.png?v=1720000469)
18X22 ND | Rectangular Damper | 18X22 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 18X22 ND
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![EWC Controls 16X20 ND Rectangular Damper | 16X20 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_6443b001-c22c-45a5-a842-2a3cc93938c7_medium.png?v=1720000469)
16X20 ND | Rectangular Damper | 16X20 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 16X20 ND
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![EWC Controls 14X30 ND Rectangular Damper | 14X30 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_cdc69de9-4892-40dd-9983-c6a9051998b1_medium.png?v=1720000526)
14X30 ND | Rectangular Damper | 14X30 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 14X30 ND
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![EWC Controls 14X24 ND Rectangular Damper | 14X24 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_184a1843-28cf-4caa-9f7d-8f770de55a61_medium.png?v=1720000437)
14X24 ND | Rectangular Damper | 14X24 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 14X24 ND
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![EWC Controls 14X18 ND Rectangular Damper | 14X18 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_d55c4e93-fcd1-4c30-a798-5a195c2d61d3_medium.png?v=1720000438)
14X18 ND | Rectangular Damper | 14X18 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 14X18 ND
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