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 16X30 ND-RSD NC Rectangular Damper | 16X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_17483d73-fd9c-4a8a-92ff-59c5e2ac4dff_medium.png?v=1713902412)
16X30 ND-RSD NC | Rectangular Damper | 16X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 16X30 ND-RSD NC
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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_93986b3d-11f8-4c89-b029-c3f887d4ab1a_medium.png?v=1713902385)
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 16X24 ND-RSD NC Rectangular Damper | 16X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_63707c4c-2528-4178-98b5-67edcfe86fde_medium.png?v=1713902375)
16X24 ND-RSD NC | Rectangular Damper | 16X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 16X24 ND-RSD NC
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![EWC Controls 16X18 ND-RSD NC Rectangular Damper | 16X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_1d1d63cc-35c7-43f7-b5d8-da2ead777cb7_medium.png?v=1713902390)
16X18 ND-RSD NC | Rectangular Damper | 16X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 16X18 ND-RSD NC
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![EWC Controls 14X28 ND-RSD NC Rectangular Damper | 14X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_9e28da5c-9dee-426f-8d46-2030923faabf_medium.png?v=1713902377)
14X28 ND-RSD NC | Rectangular Damper | 14X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 14X28 ND-RSD NC
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![EWC Controls 14X26 ND-RSD NC Rectangular Damper | 14X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_0a580b31-89d1-4260-9a60-f4cc9a30de34_medium.png?v=1713902357)
14X26 ND-RSD NC | Rectangular Damper | 14X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 14X26 ND-RSD NC
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![EWC Controls 14X24 ND-RSD NC Rectangular Damper | 14X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_43ce4134-776a-4977-a3f4-764215a3f200_medium.png?v=1713902367)
14X24 ND-RSD NC | Rectangular Damper | 14X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 14X24 ND-RSD NC
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![EWC Controls 14X22 ND-RSD NC Rectangular Damper | 14X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_7e865784-0db7-46dc-94ba-b94f31835cce_medium.png?v=1713902386)
14X22 ND-RSD NC | Rectangular Damper | 14X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 14X22 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_832ddb21-a6f4-4af7-bb2e-c3a1979e15ac_medium.png?v=1713902366)
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_990b9df2-c123-42e1-803b-74b65a95f01c_medium.png?v=1713902354)
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 12X22 ND-RSD NC Rectangular Damper | 12X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_80b5abd6-cecb-4545-9e93-4e3b37760c19_medium.png?v=1713902345)
12X22 ND-RSD NC | Rectangular Damper | 12X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 12X22 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_bea94c73-3a75-452c-9ed6-08a5a1fd4027_medium.png?v=1713902337)
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 10X28 ND-RSD NC Rectangular Damper | 10X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_5e0e6b5e-d4bd-46d2-aa88-ab2700a8ccb3_medium.png?v=1713902358)
10X28 ND-RSD NC | Rectangular Damper | 10X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 10X28 ND-RSD NC
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![EWC Controls 10X26 ND-RSD NC Rectangular Damper | 10X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_429b904a-797d-4ae6-b90e-9ba090fcb9fb_medium.png?v=1713902318)
10X26 ND-RSD NC | Rectangular Damper | 10X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 10X26 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_6a96514a-6e53-41ac-8e0b-1b8e6c91eb85_medium.png?v=1713902495)
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 8X28 ND-RSD NC Rectangular Damper | 8X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_075ca6a8-d9be-46e9-8023-64a505c93dd2_medium.png?v=1713902514)
8X28 ND-RSD NC | Rectangular Damper | 8X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 8X28 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_6d2196b6-d432-48fd-8f0d-2e1855db2635_medium.png?v=1713902519)
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_e571f6d9-053c-4a18-818f-6c5623e2b3ed_medium.png?v=1713902537)
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_932e8db7-ffca-4e98-9a6d-3017bc1b3918_medium.png?v=1713902537)
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_899620a4-6688-445a-832e-9eb0310c8ab0_medium.png?v=1713902506)
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_4edc1721-339f-4c9a-b06c-5697e5e7a0a2_medium.png?v=1713902537)
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 30X28 ND-RSD NC Rectangular Damper | 30X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_a488844a-bfce-408e-9143-aad2af775807_medium.png?v=1713902490)
30X28 ND-RSD NC | Rectangular Damper | 30X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X28 ND-RSD NC
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![EWC Controls 30X26 ND-RSD NC Rectangular Damper | 30X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_790ef2a2-95e5-4a2b-a3dd-a12021027c44_medium.png?v=1713902532)
30X26 ND-RSD NC | Rectangular Damper | 30X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X26 ND-RSD NC
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![EWC Controls 30X24 ND-RSD NC Rectangular Damper | 30X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_982e91d1-9a63-4fea-8e70-1bc7dc0c2d7d_medium.png?v=1713902537)
30X24 ND-RSD NC | Rectangular Damper | 30X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X24 ND-RSD NC
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