round dampers
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![EWC Controls 5 URD-SRE120 N.C. 5 Inch 120V Round Motorized Spring Return Damper Normally Closed | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sr120small-proof_f610a9cd-14ca-4f96-8cad-c0db1057e235_medium.gif?v=1720000541)
5 URD-SRE120 N.C. | 5 Inch 120V Round Motorized Spring Return Damper Normally Closed | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 5 URD-SRE120 N.C.
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![EWC Controls 9 URD-SRE24 VOLT N.C. 9 URD-SRE24 24V ROUND SPRING RETURN DAMPER – NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sr120small-proof_b556d550-2d3d-4add-a4b0-7476750f68d8_medium.gif?v=1720000546)
9 URD-SRE24 VOLT N.C. | 9 URD-SRE24 24V ROUND SPRING RETURN DAMPER – NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 9 URD-SRE24 VOLT N.C.
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![EWC Controls 8X10 ND-RSD NC Rectangular Damper | 8X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_8b8993b3-a5f2-4a53-86af-715c6f502ecb_medium.png?v=1720000541)
8X10 ND-RSD NC | Rectangular Damper | 8X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 8X10 ND-RSD NC
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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_4dc2b18f-9fd7-4a8a-8ee2-a6ec5fbbdcb5_medium.png?v=1720094307)
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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![EWC Controls 5 URD-SRE24 VOLT N.C. 5 URD-SRE24 24V ROUND SPRING RETURN DAMPER – NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sr120small-proof_6ea9c934-9d57-4c07-aa72-1c98cb65cdd4_medium.gif?v=1720094304)
5 URD-SRE24 VOLT N.C. | 5 URD-SRE24 24V ROUND SPRING RETURN DAMPER – NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 5 URD-SRE24 VOLT N.C.
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![EWC Controls 4 URD-SRE120 N.O. 4 Inch 120V Round Motorized Spring Return Damper Normally Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sr120small-proof_0c5a3f36-3626-4367-b848-30d9eb72acb1_medium.gif?v=1720094293)
4 URD-SRE120 N.O. | 4 Inch 120V Round Motorized Spring Return Damper Normally Open | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 4 URD-SRE120 N.O.
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![EWC Controls 6 URD-SRE24 VOLT N.O. 6 URD-SRE24 24V ROUND SPRING RETURN DAMPER – NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sr120small-proof_1d3705fd-5698-4875-a650-a25f1e418882_medium.gif?v=1720000526)
6 URD-SRE24 VOLT N.O. | 6 URD-SRE24 24V ROUND SPRING RETURN DAMPER – NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 6 URD-SRE24 VOLT N.O.
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![EWC Controls 4 URD-SRE24 VOLT N.C. 4 URD-SRE24 24V ROUND SPRING RETURN DAMPER – NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sr120small-proof_2470d5e0-37e2-45f1-9488-d37ea0f7ab7e_medium.gif?v=1720000522)
4 URD-SRE24 VOLT N.C. | 4 URD-SRE24 24V ROUND SPRING RETURN DAMPER – NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 4 URD-SRE24 VOLT N.C.
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![EWC Controls 4 URD-SRE120 N.C. 4 Inch 120V Round Motorized Spring Return Damper Normally Closed | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sr120small-proof_d4487fa4-d23e-4572-bd74-1897aa348b0a_medium.gif?v=1720000513)
4 URD-SRE120 N.C. | 4 Inch 120V Round Motorized Spring Return Damper Normally Closed | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 4 URD-SRE120 N.C.
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![EWC Controls 28X24 ND-RSD NC Rectangular Damper | 28X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_e47aed7b-b69d-4e12-a739-81b9e4903b1f_medium.png?v=1720000507)
28X24 ND-RSD NC | Rectangular Damper | 28X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 28X24 ND-RSD NC
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![EWC Controls 26X8 ND-RSD NC Rectangular Damper | 26X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_12b82b6a-3138-4702-ad07-81eb1c4c256e_medium.png?v=1720000502)
26X8 ND-RSD NC | Rectangular Damper | 26X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X8 ND-RSD NC
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![EWC Controls 30X26 ND-RSD NO Rectangular Damper | 30X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_6707878c-b50b-41ed-b4b5-8459475fb509_medium.png?v=1720000501)
30X26 ND-RSD NO | Rectangular Damper | 30X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X26 ND-RSD NO
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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 16X14 ND-RSD NC Rectangular Damper | 16X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_2785b0fd-3811-4035-8ada-9de8c8933d7a_medium.png?v=1720000477)
16X14 ND-RSD NC | Rectangular Damper | 16X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 16X14 ND-RSD NC
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![EWC Controls 22X18 ND-RSD NC Rectangular Damper | 22X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_f39aefef-b535-4e4a-9aae-1fcec07a7436_medium.png?v=1720000469)
22X18 ND-RSD NC | Rectangular Damper | 22X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X18 ND-RSD NC
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![EWC Controls 12 PRD-RD 12 Inch Round Manual Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/bypass1_dd493878-bd82-4df1-9ae8-213216dccdde_medium.jpg?v=1720000432)
12 PRD-RD | 12 Inch Round Manual Bypass Damper | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 12 PRD-RD
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![EWC Controls 12X30 ND-RSD NC Rectangular Damper | 12X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_761f1e9a-a4d7-40e2-a9b5-6d94e528d627_medium.png?v=1720000428)
12X30 ND-RSD NC | Rectangular Damper | 12X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 12X30 ND-RSD NC
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![EWC Controls 20X16 ND-15S 20X16 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_4c1c2e8b-59c4-4f3a-b5bb-afd3cd97ee74_medium.png?v=1720000408)
20X16 ND-15S | 20X16 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 20X16 ND-15S
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![EWC Controls 12X12 EBD 12X12 Rectangular Electronic Static Pressure Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ebd_55157008-b0f0-4263-abce-0cabc1295fd7_medium.gif?v=1720000403)
12X12 EBD | 12X12 Rectangular Electronic Static Pressure Bypass Damper | EWC Controls
Brand: EWC Controls
SKU: 12X12 EBD
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![EWC Controls 24X24 ND-15S 24X24 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_8eae603a-424c-458a-81ca-0961d961c68b_medium.png?v=1720000398)
24X24 ND-15S | 24X24 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 24X24 ND-15S
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![EWC Controls 8X6 ND-15S 8X6 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_cd90a8c3-2ddd-416b-8413-8155393ec214_medium.png?v=1720000394)
8X6 ND-15S | 8X6 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 8X6 ND-15S
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![EWC Controls 20X24 ND-15S 20X24 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_cb3975f7-642c-40ff-b3c6-e0aab1d0dd96_medium.png?v=1720000393)
20X24 ND-15S | 20X24 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 20X24 ND-15S
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![EWC Controls 16X22 ND-15S 16X22 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_9df0078d-bf74-494c-afdc-a3458c21514b_medium.png?v=1720094298)
16X22 ND-15S | 16X22 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 16X22 ND-15S
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![EWC Controls 18X20 ND-15S 18X20 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_decd2aac-6f4c-4681-b053-e356c0aa6b0e_medium.png?v=1720000375)
18X20 ND-15S | 18X20 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 18X20 ND-15S
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