Ewc Non-spring return Spring return
We offer over 70 EWC HVAC products, including Bypass Dampers, Damper Controls & Accessories, Rectangular Dampers, Round Dampers, and Zoning Panels.
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![EWC Controls 16X14 ND-15S 16X14 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_a8ce2927-9806-4e75-8bc1-77eb8e6d0366_medium.png?v=1720000360)
16X14 ND-15S | 16X14 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 16X14 ND-15S
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![EWC Controls 16X10 ND-15S 16X10 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_17e1a19b-bc8f-4dd6-b263-2004246abbdf_medium.png?v=1720000315)
16X10 ND-15S | 16X10 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 16X10 ND-15S
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![EWC Controls 16X16 ND-15S 16X16 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_0e7e235f-0592-4596-9164-28cfb4213ad8_medium.png?v=1720000371)
16X16 ND-15S | 16X16 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 16X16 ND-15S
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![EWC Controls 14X12 ND-15S 14X12 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_ab2f636d-5e9a-4d4b-a70c-90ebd6d6ffc4_medium.png?v=1720000375)
14X12 ND-15S | 14X12 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 14X12 ND-15S
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![EWC Controls 16X8 ND-15S 16X8 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_9bb35e42-2744-44e9-ae91-e26ceea720d4_medium.png?v=1720000351)
16X8 ND-15S | 16X8 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 16X8 ND-15S
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![EWC Controls 16X6 ND-15S 16X6 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_a7b7aaa9-cad9-4655-981f-0d79fa922aa5_medium.png?v=1720000315)
16X6 ND-15S | 16X6 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 16X6 ND-15S
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![EWC Controls 14X6 ND-15S 14X6 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_22171bff-4bf7-4a58-b896-b168a63bf97d_medium.png?v=1720000345)
14X6 ND-15S | 14X6 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 14X6 ND-15S
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![EWC Controls 14X14 ND-15S 14X14 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_6546497a-a74a-4002-abf8-332e516fd8f8_medium.png?v=1720000315)
14X14 ND-15S | 14X14 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 14X14 ND-15S
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![EWC Controls 14X8 ND-15S 14X8 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_75b86753-771d-4d67-ba69-b869a5faef65_medium.png?v=1720000375)
14X8 ND-15S | 14X8 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 14X8 ND-15S
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![EWC Controls 12X6 ND-15S 12X6 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_b0b6fd28-cf80-4a19-abf4-d5c74f00836c_medium.png?v=1720000371)
12X6 ND-15S | 12X6 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 12X6 ND-15S
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![EWC Controls 12X12 ND-15S 12X12 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_9e2d16ef-9026-467b-9186-a5853fe23667_medium.png?v=1720000331)
12X12 ND-15S | 12X12 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 12X12 ND-15S
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![EWC Controls 12X10 ND-15S 12X10 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_df17a646-f78f-40b3-94e7-ae85c6ec5b86_medium.png?v=1720000341)
12X10 ND-15S | 12X10 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 12X10 ND-15S
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![EWC Controls 8X8 ND-15S 8X8 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_c3c9b6f2-3529-48eb-928a-53a74d66c97c_medium.png?v=1720000365)
8X8 ND-15S | 8X8 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 8X8 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 10 EBD 10 Inch Round Electronic Static Pressure Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ebd-round_d39c4f08-9661-4b11-8a30-32da0f548ea8_medium.gif?v=1720000365)
10 EBD | 10 Inch Round Electronic Static Pressure Bypass Damper | EWC Controls
Brand: EWC Controls
SKU: 10 EBD
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![EWC Controls 9 SID 9 Inch Slip In Retrofit Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/sid1_medium.gif?v=1713902498)
9 SID | 9 Inch Slip In Retrofit Damper | EWC Controls
Brand: EWC Controls
SKU: 9 SID
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![EWC Controls 7 SID 7 Inch Slip In Retrofit Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/sid1_554b1c4d-6157-4260-b9a6-f5c644a7a56f_medium.gif?v=1713902519)
7 SID | 7 Inch Slip In Retrofit Damper | EWC Controls
Brand: EWC Controls
SKU: 7 SID
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![EWC Controls 5 SID 5 Inch Slip In Retrofit Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/sid1_cb8217e4-4694-43c2-8aae-04c9fce0fb4a_medium.gif?v=1713902510)
5 SID | 5 Inch Slip In Retrofit Damper | EWC Controls
Brand: EWC Controls
SKU: 5 SID
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![EWC Controls 20X12 EBD 20X12 Rectangular Electronic Static Pressure Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ebd_medium.gif?v=1720000463)
20X12 EBD | 20X12 Rectangular Electronic Static Pressure Bypass Damper | EWC Controls
Brand: EWC Controls
SKU: 20X12 EBD
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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 20X8 EBD 20X8 Rectangular Electronic Static Pressure Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ebd_b9e48722-c675-4f7d-b645-53c17ba34a73_medium.gif?v=1720000473)
20X8 EBD | 20X8 Rectangular Electronic Static Pressure Bypass Damper | EWC Controls
Brand: EWC Controls
SKU: 20X8 EBD
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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 12X10 EBD 12X10 Rectangular Electronic Static Pressure Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ebd_e0909743-8d46-4d27-bf3d-14a1eb52147d_medium.gif?v=1720000408)
12X10 EBD | 12X10 Rectangular Electronic Static Pressure Bypass Damper | EWC Controls
Brand: EWC Controls
SKU: 12X10 EBD
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![EWC Controls 12X8 EBD 12X8 Rectangular Electronic Static Pressure Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ebd_f4521d37-230c-47ad-a2e0-c01d11e6812d_medium.gif?v=1720000403)
12X8 EBD | 12X8 Rectangular Electronic Static Pressure Bypass Damper | EWC Controls
Brand: EWC Controls
SKU: 12X8 EBD
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