Rectangular motorized dampers Rectangular dampers Type
Over 1,500 rectangular motorized duct dampers by Braeburn, Honeywell, iO HVAC Controls, and EWC Controls in our stock are available to purchase.
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![EWC Controls 18X20 ND-RSD NO Rectangular Damper | 18X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_70943a17-fc1f-4c9a-8b8b-370ea0da8092_medium.png?v=1713902384)
18X20 ND-RSD NO | Rectangular Damper | 18X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 18X20 ND-RSD NO
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![EWC Controls 16X28 ND-RSD NO Rectangular Damper | 16X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_d9004de7-c5dc-44dc-87f2-c7792a177c1c_medium.png?v=1713902385)
16X28 ND-RSD NO | Rectangular Damper | 16X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 16X28 ND-RSD NO
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![EWC Controls 14X28 ND-RSD NO Rectangular Damper | 14X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_dcb04594-c6cc-464e-9982-b77ee848d391_medium.png?v=1713902377)
14X28 ND-RSD NO | Rectangular Damper | 14X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 14X28 ND-RSD NO
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![EWC Controls 14X26 ND-RSD NO Rectangular Damper | 14X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_f787f30b-8f6d-478a-baec-ba2a0cb11cb9_medium.png?v=1713902379)
14X26 ND-RSD NO | Rectangular Damper | 14X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 14X26 ND-RSD NO
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![EWC Controls 14X24 ND-RSD NO Rectangular Damper | 14X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_545c2fe8-3fe5-4790-a4db-c5222a8af443_medium.png?v=1713902395)
14X24 ND-RSD NO | Rectangular Damper | 14X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 14X24 ND-RSD NO
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![EWC Controls 14X18 ND-RSD NO Rectangular Damper | 14X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_09003296-7d28-4a61-b340-f070de63f571_medium.png?v=1713902355)
14X18 ND-RSD NO | Rectangular Damper | 14X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 14X18 ND-RSD NO
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![EWC Controls 14X16 ND-RSD NO Rectangular Damper | 14X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_f71050e3-1a8e-4320-bb45-a999dffa4daf_medium.png?v=1713902418)
14X16 ND-RSD NO | Rectangular Damper | 14X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 14X16 ND-RSD NO
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![EWC Controls 12X22 ND-RSD NO Rectangular Damper | 12X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_275f77fc-5cd0-4305-a509-9da670fa9293_medium.png?v=1713902346)
12X22 ND-RSD NO | Rectangular Damper | 12X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 12X22 ND-RSD NO
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![EWC Controls 12X18 ND-RSD NO Rectangular Damper | 12X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_f62da3d7-f673-465b-aa62-eb6a079fe575_medium.png?v=1713902338)
12X18 ND-RSD NO | Rectangular Damper | 12X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 12X18 ND-RSD NO
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![EWC Controls 10X30 ND-RSD NO Rectangular Damper | 10X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_603545ef-592b-4eb3-b640-021cc1f8d7c3_medium.png?v=1713902317)
10X30 ND-RSD NO | Rectangular Damper | 10X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 10X30 ND-RSD NO
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![EWC Controls 10X26 ND-RSD NO Rectangular Damper | 10X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_da3ab040-3a1d-4a2b-a2e1-8a09b6eaeb80_medium.png?v=1713902337)
10X26 ND-RSD NO | Rectangular Damper | 10X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 10X26 ND-RSD NO
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![EWC Controls 10X20 ND-RSD NO Rectangular Damper | 10X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_12d2168c-ffc7-43a5-8c52-b5fb18a79192_medium.png?v=1713902311)
10X20 ND-RSD NO | Rectangular Damper | 10X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 10X20 ND-RSD NO
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![EWC Controls 10x16 ND-RSD NO Rectangular Damper | 10X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_d7f68323-63b7-4645-8c31-210e1d82c2a4_medium.png?v=1713902331)
10x16 ND-RSD NO | Rectangular Damper | 10X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 10x16 ND-RSD NO
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![EWC Controls 10X14 ND-RSD NO Rectangular Damper | 10X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_ce329e09-89d0-41aa-a5f6-eff034f34a66_medium.png?v=1713902332)
10X14 ND-RSD NO | Rectangular Damper | 10X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 10X14 ND-RSD NO
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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_ac8441a2-4399-48cb-8a31-e500a0a54194_medium.png?v=1713902480)
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_65d985ae-650b-4064-b75f-e65be6c3f246_medium.png?v=1713902510)
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_3424f44c-24bd-4e83-94b8-5a2afab3ae0e_medium.png?v=1713902462)
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 28X20 ND-RSD NO Rectangular Damper | 28X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_725e0f11-3da7-42c5-b9c9-6ea68f326c60_medium.png?v=1713902451)
28X20 ND-RSD NO | Rectangular Damper | 28X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 28X20 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_a35c7b7b-6adb-4da0-949e-168e4132bb0c_medium.png?v=1713902442)
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 24X22 ND-RSD NO Rectangular Damper | 24X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_587c8d36-6abf-4c4e-8a71-9d3c8294b806_medium.png?v=1713902432)
24X22 ND-RSD NO | Rectangular Damper | 24X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X22 ND-RSD NO
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![EWC Controls 24X16 ND-RSD NO Rectangular Damper | 24X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_6f2cd73d-ddbb-4fc1-b237-4dbfed912b0f_medium.png?v=1713902494)
24X16 ND-RSD NO | Rectangular Damper | 24X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X16 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_f3e7f0ef-4cd5-4b45-99cf-c08aec01d712_medium.png?v=1713902451)
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_bd858eb5-41de-4ad6-8281-29d4dc95c8a8_medium.png?v=1713902443)
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_615d4ec6-966c-4217-9749-e30757b8bf0d_medium.png?v=1713902431)
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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