Dampers (hidden without zone panels) Rectangular Shape
Zone dampers for HVAC systems without zone control panels. Order Individual 24V motorized dampers for creating HVAC zones today at Blackhawk Supply.
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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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![EWC Controls 20X24 ND-RSD NO Rectangular Damper | 20X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_3c8c7872-4ee6-4691-a2be-d05ccee5b293_medium.png?v=1713902418)
20X24 ND-RSD NO | Rectangular Damper | 20X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 20X24 ND-RSD NO
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![EWC Controls 18X26 ND-RSD NO Rectangular Damper | 18X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_50d69667-2879-4733-a2af-047031c7d03e_medium.png?v=1713902411)
18X26 ND-RSD NO | Rectangular Damper | 18X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 18X26 ND-RSD NO
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![EWC Controls 18X24 ND-RSD NO Rectangular Damper | 18X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_bc6fed14-c16e-4e90-aab0-2c65b2d54d0a_medium.png?v=1713902398)
18X24 ND-RSD NO | Rectangular Damper | 18X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 18X24 ND-RSD NO
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![EWC Controls 18X22 ND-RSD NO Rectangular Damper | 18X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_b0bd899b-3725-4fe1-92c3-79299ad94eaa_medium.png?v=1713902385)
18X22 ND-RSD NO | Rectangular Damper | 18X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 18X22 ND-RSD NO
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![EWC Controls 16X30 ND-RSD NO Rectangular Damper | 16X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_53bc7546-1abc-44c1-9aba-74eaa27cc097_medium.png?v=1713902389)
16X30 ND-RSD NO | Rectangular Damper | 16X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 16X30 ND-RSD NO
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![EWC Controls 16X26 ND-RSD NO Rectangular Damper | 16X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_35b00bae-f372-4e77-9b93-34158c78adad_medium.png?v=1713902414)
16X26 ND-RSD NO | Rectangular Damper | 16X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 16X26 ND-RSD NO
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![EWC Controls 16X24 ND-RSD NO Rectangular Damper | 16X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_07baafdc-a6a8-435f-904e-fbc7eecb0418_medium.png?v=1713902374)
16X24 ND-RSD NO | Rectangular Damper | 16X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 16X24 ND-RSD NO
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![EWC Controls 16X22 ND-RSD NO Rectangular Damper | 16X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_91605148-23b4-4f86-b35d-1f80189db264_medium.png?v=1713902383)
16X22 ND-RSD NO | Rectangular Damper | 16X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 16X22 ND-RSD NO
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![EWC Controls 16X18 ND-RSD NO Rectangular Damper | 16X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_bcd91278-2e01-411f-bd1f-5bc60bc0fed2_medium.png?v=1713902395)
16X18 ND-RSD NO | Rectangular Damper | 16X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 16X18 ND-RSD NO
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![EWC Controls 14X30 ND-RSD NO Rectangular Damper | 14X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c4528314-ab5e-4477-aa6d-4adb5a94349d_medium.png?v=1713902360)
14X30 ND-RSD NO | Rectangular Damper | 14X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 14X30 ND-RSD NO
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![EWC Controls 14X22 ND-RSD NO Rectangular Damper | 14X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_ec3cbcca-d69d-49e5-be27-bdd1cc556d0b_medium.png?v=1713902376)
14X22 ND-RSD NO | Rectangular Damper | 14X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 14X22 ND-RSD NO
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![EWC Controls 14X20 ND-RSD NO Rectangular Damper | 14X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_05fbb8ab-62ff-4502-8d36-881053cb6fa8_medium.png?v=1713902366)
14X20 ND-RSD NO | Rectangular Damper | 14X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 14X20 ND-RSD NO
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![EWC Controls 12X30 ND-RSD NO Rectangular Damper | 12X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_fc4117e0-e1ab-488a-8f04-a2110aa816a0_medium.png?v=1713902354)
12X30 ND-RSD NO | Rectangular Damper | 12X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 12X30 ND-RSD NO
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![EWC Controls 12X28 ND-RSD NO Rectangular Damper | 12X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_62cad052-8e0a-42fc-8e2f-dd56ab20d463_medium.png?v=1713902375)
12X28 ND-RSD NO | Rectangular Damper | 12X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 12X28 ND-RSD NO
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![EWC Controls 12X26 ND-RSD NO Rectangular Damper | 12X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_b7a1c5e4-1d22-47ca-8b38-f34bfbba3ff8_medium.png?v=1713902352)
12X26 ND-RSD NO | Rectangular Damper | 12X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 12X26 ND-RSD NO
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![EWC Controls 12X16 ND-RSD NO Rectangular Damper | 12X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_4157660e-e9f6-4edb-a257-34146a5fc7c8_medium.png?v=1713902338)
12X16 ND-RSD NO | Rectangular Damper | 12X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 12X16 ND-RSD NO
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![EWC Controls 10X28 ND-RSD NO Rectangular Damper | 10X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_0f5cdb8b-a495-474f-9564-f031b4ff8655_medium.png?v=1713902366)
10X28 ND-RSD NO | Rectangular Damper | 10X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 10X28 ND-RSD NO
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![EWC Controls 10X24 ND-RSD NO Rectangular Damper | 10X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c4cd379f-f9cd-48a7-8c58-ba6c5261cc37_medium.png?v=1713902346)
10X24 ND-RSD NO | Rectangular Damper | 10X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 10X24 ND-RSD NO
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![EWC Controls 10X22 ND-RSD NO Rectangular Damper | 10X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_5ae02cea-e73a-4dfc-b37a-5b785fb0a9da_medium.png?v=1713902297)
10X22 ND-RSD NO | Rectangular Damper | 10X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 10X22 ND-RSD NO
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![EWC Controls 10X18 ND-RSD NO Rectangular Damper | 10X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c6cf0c5a-5d7f-432b-a2c7-12f2cf9fac92_medium.png?v=1713902271)
10X18 ND-RSD NO | Rectangular Damper | 10X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 10X18 ND-RSD NO
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![EWC Controls 8X28 ND-RSD NO Rectangular Damper | 8X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_b96d197f-b4d0-41e0-bf06-6e4ec7659dfb_medium.png?v=1713902532)
8X28 ND-RSD NO | Rectangular Damper | 8X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 8X28 ND-RSD NO
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![EWC Controls 8X26 ND-RSD NO Rectangular Damper | 8X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_b5c2bac9-304e-48d0-83a7-cb7851a1ab39_medium.png?v=1713902524)
8X26 ND-RSD NO | Rectangular Damper | 8X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 8X26 ND-RSD NO
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![EWC Controls 8X24 ND-RSD NO Rectangular Damper | 8X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_62815308-a5a2-4646-944c-5d364fc63101_medium.png?v=1713902478)
8X24 ND-RSD NO | Rectangular Damper | 8X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 8X24 ND-RSD NO
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