Rectangular dampers Yes Motorized
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![EWC Controls 16X28 ND Rectangular Damper | 16X28 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_05fe8c39-d2ff-46df-ba33-fceeae3b0351_medium.png?v=1720000488)
16X28 ND | Rectangular Damper | 16X28 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 16X28 ND
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![EWC Controls 22X20 ND Rectangular Damper | 22X20 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_581ca76f-4c43-4aec-af03-4bce7f5f9eb8_medium.png?v=1720000488)
22X20 ND | Rectangular Damper | 22X20 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 22X20 ND
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![EWC Controls 24X6 ND-RSD NO Rectangular Damper | 24X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_9987db18-2faa-4d75-83ba-d03ca6a74121_medium.png?v=1720000487)
24X6 ND-RSD NO | Rectangular Damper | 24X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X6 ND-RSD NO
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![EWC Controls 24X20 ND-RSD NO Rectangular Damper | 24X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_6b753f67-6c00-4c95-8cfd-234bda78c451_medium.png?v=1720000483)
24X20 ND-RSD NO | Rectangular Damper | 24X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X20 ND-RSD NO
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![EWC Controls 28X26 ND Rectangular Damper | 28X26 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_194a97f7-5f7a-4573-b28b-8735afaf361d_medium.png?v=1720000483)
28X26 ND | Rectangular Damper | 28X26 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 28X26 ND
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![EWC Controls 24X22 ND Rectangular Damper | 24X22 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_cde12b42-bf71-4ea1-b797-a1fe844c5cd1_medium.png?v=1720000482)
24X22 ND | Rectangular Damper | 24X22 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 24X22 ND
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![EWC Controls 22X6 ND-RSD NO Rectangular Damper | 22X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_9d6ddc8e-85ac-47de-9b78-174d8b5e8e6c_medium.png?v=1720000482)
22X6 ND-RSD NO | Rectangular Damper | 22X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X6 ND-RSD NO
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![EWC Controls 18X10 ND-RSD NC Rectangular Damper | 18X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_25ecdc06-fc55-4f87-806a-0ec8d16cd0f6_medium.png?v=1720000481)
18X10 ND-RSD NC | Rectangular Damper | 18X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 18X10 ND-RSD NC
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![EWC Controls 20X18 ND-RSD NC Rectangular Damper | 20X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c70bc79f-3b8d-4990-bf43-9935d48a20c4_medium.png?v=1720000482)
20X18 ND-RSD NC | Rectangular Damper | 20X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 20X18 ND-RSD NC
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![EWC Controls 18X14 ND-RSD NO Rectangular Damper | 18X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_cc111724-d840-46ce-b184-1a92b8a21e50_medium.png?v=1720000477)
18X14 ND-RSD NO | Rectangular Damper | 18X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 18X14 ND-RSD NO
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![EWC Controls 20X6 ND-RSD NC Rectangular Damper | 20X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_633d9220-743a-4162-a0c1-a9c136640ff5_medium.png?v=1720000477)
20X6 ND-RSD NC | Rectangular Damper | 20X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 20X6 ND-RSD NC
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![EWC Controls 20X6 ND-RSD NO Rectangular Damper | 20X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c00c69ce-321b-4dde-9604-e49a81cf47b3_medium.png?v=1720000477)
20X6 ND-RSD NO | Rectangular Damper | 20X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 20X6 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_dedce76d-4cc6-4565-b156-cd63616a12af_medium.png?v=1720000472)
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 20X10 ND-RSD NO Rectangular Damper | 20X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_5290a375-a4e9-4039-996f-5f0cafe242c8_medium.png?v=1720000468)
20X10 ND-RSD NO | Rectangular Damper | 20X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 20X10 ND-RSD NO
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![EWC Controls 16X6 ND-RSD NO Rectangular Damper | 16X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_3d39101a-0b64-4041-ae21-608c0dca4b40_medium.png?v=1720000469)
16X6 ND-RSD NO | Rectangular Damper | 16X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 16X6 ND-RSD NO
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![EWC Controls 18X10 ND-RSD NO Rectangular Damper | 18X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_96c76f57-8705-4d09-baf8-1a3d02a40fc4_medium.png?v=1720000469)
18X10 ND-RSD NO | Rectangular Damper | 18X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 18X10 ND-RSD NO
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![EWC Controls 16X22 ND Rectangular Damper | 16X22 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_29e89e58-1eaa-43a7-950e-0489f534771a_medium.png?v=1720000468)
16X22 ND | Rectangular Damper | 16X22 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 16X22 ND
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![EWC Controls 18X14 ND-RSD NC Rectangular Damper | 18X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_00a86510-767c-414f-ba93-d5026ab9fbda_medium.png?v=1720000468)
18X14 ND-RSD NC | Rectangular Damper | 18X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 18X14 ND-RSD NC
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![EWC Controls 20X14 ND-RSD NC Rectangular Damper | 20X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_82e12b1a-92bd-4439-a405-806713dd2657_medium.png?v=1720094298)
20X14 ND-RSD NC | Rectangular Damper | 20X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 20X14 ND-RSD NC
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![EWC Controls 20X6 ND Rectangular Damper | 20X6 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_e1a29235-849c-401e-b0ae-a7d1ade66e72_medium.png?v=1720094298)
20X6 ND | Rectangular Damper | 20X6 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 20X6 ND
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![EWC Controls 16X12 ND-RSD NO Rectangular Damper | 16X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_d88b8a22-3628-476b-9a89-b20b5e18f4c0_medium.png?v=1720000452)
16X12 ND-RSD NO | Rectangular Damper | 16X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 16X12 ND-RSD NO
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![EWC Controls 14X26 ND Rectangular Damper | 14X26 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_e395d9a2-300f-4709-a966-2462c4c2d406_medium.png?v=1720000442)
14X26 ND | Rectangular Damper | 14X26 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 14X26 ND
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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_5f7e2e32-59e8-4e9f-9eb8-d6e724a6169d_medium.png?v=1720000442)
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 16X30 ND Rectangular Damper | 16X30 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_b0ee7fd3-ffd8-4016-9779-8b0bb2d123fd_medium.png?v=1720000438)
16X30 ND | Rectangular Damper | 16X30 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 16X30 ND
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