dampers
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![EWC Controls 18X6 ND-RSD NC Rectangular Damper | 18X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_97020746-7291-43e3-95aa-5b8c20b7481a_medium.png?v=1720000497)
18X6 ND-RSD NC | Rectangular Damper | 18X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 18X6 ND-RSD NC
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![EWC Controls 18X12 ND-RSD NO Rectangular Damper | 18X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_9d1c8415-ecc1-4465-ac32-24c67c19b0a0_medium.png?v=1720000496)
18X12 ND-RSD NO | Rectangular Damper | 18X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 18X12 ND-RSD NO
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![EWC Controls 26X22 ND Rectangular Damper | 26X22 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_1b5023df-2d4b-4583-89d1-edf3be28f547_medium.png?v=1720000497)
26X22 ND | Rectangular Damper | 26X22 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 26X22 ND
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![EWC Controls 20X22 ND Rectangular Damper | 20X22 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_e0f78a3e-ecc4-4ae8-b471-f3c33964ba39_medium.png?v=1720000497)
20X22 ND | Rectangular Damper | 20X22 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 20X22 ND
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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 26X10 ND Rectangular Damper | 26X10 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_025ad66d-54c7-4b5b-b2c7-2e5004d5eae5_medium.png?v=1720000496)
26X10 ND | Rectangular Damper | 26X10 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 26X10 ND
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![EWC Controls 22X6 ND-RSD NC Rectangular Damper | 22X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_b0e271d1-2d01-4695-b794-27c95be13ead_medium.png?v=1720000492)
22X6 ND-RSD NC | Rectangular Damper | 22X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X6 ND-RSD NC
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![EWC Controls 18X18 ND-RSD NO Rectangular Damper | 18X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_7aeaeea8-9260-42b8-abd6-43d162da3302_medium.png?v=1720000491)
18X18 ND-RSD NO | Rectangular Damper | 18X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 18X18 ND-RSD NO
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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 26X14 ND Rectangular Damper | 26X14 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_4a336a16-0b8b-4f24-b523-cb35d495edf2_medium.png?v=1720000488)
26X14 ND | Rectangular Damper | 26X14 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 26X14 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 20X10 EBD 20X10 Rectangular Electronic Static Pressure Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ebd_aaf30ef3-d958-4f5d-87b0-7f118a08343f_medium.gif?v=1720000487)
20X10 EBD | 20X10 Rectangular Electronic Static Pressure Bypass Damper | EWC Controls
Brand: EWC Controls
SKU: 20X10 EBD
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![EWC Controls 24X24 ND-RSD NO Rectangular Damper | 24X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_65fd21b7-cd3b-4bfc-8d3b-190810882f74_medium.png?v=1720000487)
24X24 ND-RSD NO | Rectangular Damper | 24X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X24 ND-RSD NO
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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 26X14 ND-RSD NO Rectangular Damper | 26X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c455ba83-9472-4a65-b74b-6d9300df808f_medium.png?v=1720000482)
26X14 ND-RSD NO | Rectangular Damper | 26X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X14 ND-RSD NO
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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 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 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 26X12 ND-RSD NO Rectangular Damper | 26X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_01364629-c054-4274-9b9c-a165332e492a_medium.png?v=1720000477)
26X12 ND-RSD NO | Rectangular Damper | 26X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X12 ND-RSD NO
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