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 12X12 EBD 12X12 Rectangular Electronic Static Pressure Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ebd_55157008-b0f0-4263-abce-0cabc1295fd7_medium.gif?v=1720000403)
12X12 EBD | 12X12 Rectangular Electronic Static Pressure Bypass Damper | EWC Controls
Brand: EWC Controls
SKU: 12X12 EBD
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![EWC Controls 12X10 EBD 12X10 Rectangular Electronic Static Pressure Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ebd_e0909743-8d46-4d27-bf3d-14a1eb52147d_medium.gif?v=1720000408)
12X10 EBD | 12X10 Rectangular Electronic Static Pressure Bypass Damper | EWC Controls
Brand: EWC Controls
SKU: 12X10 EBD
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![EWC Controls 12X8 EBD 12X8 Rectangular Electronic Static Pressure Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ebd_f4521d37-230c-47ad-a2e0-c01d11e6812d_medium.gif?v=1720000403)
12X8 EBD | 12X8 Rectangular Electronic Static Pressure Bypass Damper | EWC Controls
Brand: EWC Controls
SKU: 12X8 EBD
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![EWC Controls 16X26 ND-RSD NC Rectangular Damper | 16X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_d90c5a42-0b81-4cbb-a081-072ded57bd85_medium.png?v=1720000446)
16X26 ND-RSD NC | Rectangular Damper | 16X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 16X26 ND-RSD NC
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![EWC Controls 12X30 ND-RSD NC Rectangular Damper | 12X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_761f1e9a-a4d7-40e2-a9b5-6d94e528d627_medium.png?v=1720000428)
12X30 ND-RSD NC | Rectangular Damper | 12X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 12X30 ND-RSD NC
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![EWC Controls 12X26 ND-RSD NC Rectangular Damper | 12X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_b19ce48d-23e7-4e24-9b4e-58d28f71422e_medium.png?v=1720000436)
12X26 ND-RSD NC | Rectangular Damper | 12X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 12X26 ND-RSD NC
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![EWC Controls 12X14 ND-RSD NC Rectangular Damper | 12X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_b257ec5a-8448-4d5f-b0b5-22ba49eee599_medium.png?v=1720000408)
12X14 ND-RSD NC | Rectangular Damper | 12X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 12X14 ND-RSD NC
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![EWC Controls 8X30 ND-RSD NC Rectangular Damper | 8X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_89fd3693-ca10-41fb-9559-bbebe255f156_medium.png?v=1720094307)
8X30 ND-RSD NC | Rectangular Damper | 8X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 8X30 ND-RSD NC
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![EWC Controls 8X24 ND-RSD NC Rectangular Damper | 8X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_a27e3308-327f-476e-82ce-eaa83a41cc59_medium.png?v=1719987499)
8X24 ND-RSD NC | Rectangular Damper | 8X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 8X24 ND-RSD NC
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![EWC Controls 8X22 ND-RSD NC Rectangular Damper | 8X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c21fa5be-f448-4794-ad01-39039e26b2d7_medium.png?v=1719987717)
8X22 ND-RSD NC | Rectangular Damper | 8X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 8X22 ND-RSD NC
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![EWC Controls 8X20 ND-RSD NC Rectangular Damper | 8X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_fa8e614f-11c5-478e-8c3c-2ffbd696abab_medium.png?v=1719987500)
8X20 ND-RSD NC | Rectangular Damper | 8X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 8X20 ND-RSD NC
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![EWC Controls 8X12 ND-RSD NC Rectangular Damper | 8X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_0767f8e1-ce72-4a03-ad81-847a120e8e07_medium.png?v=1720000551)
8X12 ND-RSD NC | Rectangular Damper | 8X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 8X12 ND-RSD NC
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![EWC Controls 8X10 ND-RSD NC Rectangular Damper | 8X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_8b8993b3-a5f2-4a53-86af-715c6f502ecb_medium.png?v=1720000541)
8X10 ND-RSD NC | Rectangular Damper | 8X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 8X10 ND-RSD NC
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![EWC Controls 30X8 ND-RSD NC Rectangular Damper | 30X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_ba142781-6544-47d7-9020-e361d2d79192_medium.png?v=1720000512)
30X8 ND-RSD NC | Rectangular Damper | 30X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X8 ND-RSD NC
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![EWC Controls 28X28 ND-RSD NC Rectangular Damper | 28X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_940522fe-e1cf-41d1-9c41-d58c7e094076_medium.png?v=1720000496)
28X28 ND-RSD NC | Rectangular Damper | 28X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 28X28 ND-RSD NC
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![EWC Controls 28X24 ND-RSD NC Rectangular Damper | 28X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_e47aed7b-b69d-4e12-a739-81b9e4903b1f_medium.png?v=1720000507)
28X24 ND-RSD NC | Rectangular Damper | 28X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 28X24 ND-RSD NC
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![EWC Controls 28X14 ND-RSD NC Rectangular Damper | 28X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_1422b12b-336a-4c5f-9117-172e3431a6f2_medium.png?v=1720000482)
28X14 ND-RSD NC | Rectangular Damper | 28X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 28X14 ND-RSD NC
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![EWC Controls 26X26 ND-RSD NC Rectangular Damper | 26X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_815c30d7-ef4d-45b6-b671-fa93fbcf3b0b_medium.png?v=1720000546)
26X26 ND-RSD NC | Rectangular Damper | 26X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X26 ND-RSD NC
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![EWC Controls 26X14 ND-RSD NC Rectangular Damper | 26X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_91e4b975-2550-4166-8442-f3487d5873c4_medium.png?v=1720000507)
26X14 ND-RSD NC | Rectangular Damper | 26X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X14 ND-RSD NC
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![EWC Controls 26X8 ND-RSD NC Rectangular Damper | 26X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_12b82b6a-3138-4702-ad07-81eb1c4c256e_medium.png?v=1720000502)
26X8 ND-RSD NC | Rectangular Damper | 26X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X8 ND-RSD NC
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![EWC Controls 24X20 ND-RSD NC Rectangular Damper | 24X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c389d852-b181-477e-aaf1-15ce1b8055a4_medium.png?v=1720000561)
24X20 ND-RSD NC | Rectangular Damper | 24X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X20 ND-RSD NC
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![EWC Controls 24X6 ND-RSD NC Rectangular Damper | 24X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_84d3a1fb-dd88-4894-94f6-8c5db06291e6_medium.png?v=1720000517)
24X6 ND-RSD NC | Rectangular Damper | 24X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X6 ND-RSD NC
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![EWC Controls 22X20 ND-RSD NC Rectangular Damper | 22X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_b725e5f7-1be7-4f90-b9a3-e95419d731f1_medium.png?v=1720000516)
22X20 ND-RSD NC | Rectangular Damper | 22X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X20 ND-RSD NC
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![EWC Controls 22X18 ND-RSD NC Rectangular Damper | 22X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_f39aefef-b535-4e4a-9aae-1fcec07a7436_medium.png?v=1720000469)
22X18 ND-RSD NC | Rectangular Damper | 22X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X18 ND-RSD NC
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