Damper actuators Spring return (nc) Spring return
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![EWC Controls 12X10 ND-RSD NC Rectangular Damper | 12X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_bcef4771-ec51-4756-bb5b-c039f20748e1_medium.png?v=1720000388)
12X10 ND-RSD NC | Rectangular Damper | 12X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 12X10 ND-RSD NC
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![EWC Controls 8X18 ND-RSD NC Rectangular Damper | 8X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_5d072b7b-3b34-4567-8c28-806a1832b501_medium.png?v=1720000552)
8X18 ND-RSD NC | Rectangular Damper | 8X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 8X18 ND-RSD NC
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![EWC Controls 8X14 ND-RSD NC Rectangular Damper | 8X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_2912eb7f-567a-4cdd-a975-3750f753dc19_medium.png?v=1720000541)
8X14 ND-RSD NC | Rectangular Damper | 8X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 8X14 ND-RSD NC
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![EWC Controls 30X30 ND-RSD NC Rectangular Damper | 30X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_8b64c6b4-5e08-46b5-94c0-0e41187e352b_medium.png?v=1720094266)
30X30 ND-RSD NC | Rectangular Damper | 30X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X30 ND-RSD NC
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![EWC Controls 10X22 ND-RSD NC Rectangular Damper | 10X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_bde7bf96-8f66-43df-9515-0392f85a8aee_medium.png?v=1720000447)
10X22 ND-RSD NC | Rectangular Damper | 10X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 10X22 ND-RSD NC
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![EWC Controls 14X16 ND-RSD NC Rectangular Damper | 14X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_3591725c-5111-41a8-b1c6-84748611e420_medium.png?v=1720000432)
14X16 ND-RSD NC | Rectangular Damper | 14X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 14X16 ND-RSD NC
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![EWC Controls 12X18 ND-RSD NC Rectangular Damper | 12X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_74f25bad-3048-49cf-a6c6-ac8bf459e97c_medium.png?v=1720000404)
12X18 ND-RSD NC | Rectangular Damper | 12X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 12X18 ND-RSD NC
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![EWC Controls 20X10 ND-RSD NC Rectangular Damper | 20X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_50e1cadd-e7da-4502-b3cf-1fa2cb8ea4cd_medium.png?v=1720094307)
20X10 ND-RSD NC | Rectangular Damper | 20X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 20X10 ND-RSD NC
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![EWC Controls 24X8 ND-RSD NC Rectangular Damper | 24X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED] | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_66e50b39-12e9-467b-8c18-c50448937573_medium.png?v=1720000512)
24X8 ND-RSD NC | Rectangular Damper | 24X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED] | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X8 ND-RSD NC
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![EWC Controls 24X18 ND-RSD NC Rectangular Damper | 24X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_3f59db1a-8882-4d13-9912-866055427136_medium.png?v=1720000507)
24X18 ND-RSD NC | Rectangular Damper | 24X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X18 ND-RSD NC
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![EWC Controls 14X6 ND-RSD NC Rectangular Damper | 14X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_5cf0f11a-c8db-44bd-aeff-85ce482d77f0_medium.png?v=1720000452)
14X6 ND-RSD NC | Rectangular Damper | 14X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 14X6 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_a54c3a5e-df03-456a-abad-e71eeb65810d_medium.png?v=1720000409)
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 10X6 ND-RSD NC Rectangular Damper | 10X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_b194edb8-83b9-4605-b0c4-97bb926379aa_medium.png?v=1720000393)
10X6 ND-RSD NC | Rectangular Damper | 10X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 10X6 ND-RSD NC
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![EWC Controls 10X18 ND-RSD NC Rectangular Damper | 10X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_f377afc0-1fff-47c0-a12c-654fe5fcf4b7_medium.png?v=1720000388)
10X18 ND-RSD NC | Rectangular Damper | 10X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 10X18 ND-RSD NC
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![Braeburn 111016 10 x 16 Rectangular Damper PC/SR | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/braeburn_pcsr_rect_medium.jpg?v=1720005026)
111016 | 10 x 16 Rectangular Damper PC / SR | Braeburn
Brand: Braeburn
SKU: 111016
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![Braeburn 111018 10 x 18 Rectangular Damper PC/SR | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/braeburn_pcsr_rect_83efc65d-d428-42e8-bb4b-f667391bedda_medium.jpg?v=1720004975)
111018 | 10 x 18 Rectangular Damper PC / SR | Braeburn
Brand: Braeburn
SKU: 111018
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![Braeburn 111216 12 x 16 Rectangular Damper PC/SR | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/braeburn_pcsr_rect_70a71c5f-2cba-4dd8-96d6-babe62f1b76b_medium.jpg?v=1720004974)
111216 | 12 x 16 Rectangular Damper PC / SR | Braeburn
Brand: Braeburn
SKU: 111216
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![Braeburn 111022 10 x 22 Rectangular Damper PC/SR | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/braeburn_pcsr_rect_8ca8db4a-a915-4500-8e6f-4d055100e9f5_medium.jpg?v=1720004937)
111022 | 10 x 22 Rectangular Damper PC / SR | Braeburn
Brand: Braeburn
SKU: 111022
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![Braeburn 111218 12 x 18 Rectangular Damper PC/SR | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/braeburn_pcsr_rect_96949310-f7e2-4d7b-98fc-46f77d9f2825_medium.jpg?v=1720004959)
111218 | 12 x 18 Rectangular Damper PC / SR | Braeburn
Brand: Braeburn
SKU: 111218
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![EWC Controls 26X26 ND-RSD NC Rectangular Damper | 26X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_815c30d7-ef4d-45b6-b671-fa93fbcf3b0b_medium.png?v=1720000546)
26X26 ND-RSD NC | Rectangular Damper | 26X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X26 ND-RSD NC
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![EWC Controls 22X20 ND-RSD NC Rectangular Damper | 22X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_b725e5f7-1be7-4f90-b9a3-e95419d731f1_medium.png?v=1720000516)
22X20 ND-RSD NC | Rectangular Damper | 22X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X20 ND-RSD NC
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![EWC Controls 24X6 ND-RSD NC Rectangular Damper | 24X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_84d3a1fb-dd88-4894-94f6-8c5db06291e6_medium.png?v=1720000517)
24X6 ND-RSD NC | Rectangular Damper | 24X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X6 ND-RSD NC
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![EWC Controls 30X8 ND-RSD NC Rectangular Damper | 30X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_ba142781-6544-47d7-9020-e361d2d79192_medium.png?v=1720000512)
30X8 ND-RSD NC | Rectangular Damper | 30X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X8 ND-RSD NC
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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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