Dampers Spring return (no) Spring return
From rectangular to motorized dampers, from bypass dampers to zoning panels: we’ve got it all! Find what you are looking for in our stock of over 2,000 products.
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![EWC Controls 30X30 ND-RSD NO Rectangular Damper | 30X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_f74cefbc-cf3d-4505-8497-e9c36b1a292f_medium.png?v=1713902451)
30X30 ND-RSD NO | Rectangular Damper | 30X30 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X30 ND-RSD NO
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![EWC Controls 30X24 ND-RSD NO Rectangular Damper | 30X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_a49100d5-a7f0-4b41-9bed-2cf036ac37e4_medium.png?v=1713902462)
30X24 ND-RSD NO | Rectangular Damper | 30X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X24 ND-RSD NO
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![EWC Controls 30X14 ND-RSD NO Rectangular Damper | 30X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_1d92e4d0-d4ce-427a-b558-05b00a37f067_medium.png?v=1713902451)
30X14 ND-RSD NO | Rectangular Damper | 30X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 30X14 ND-RSD NO
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![EWC Controls 24X8 ND-RSD NO Rectangular Damper | 24X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN] | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_87468f6f-db0d-4c0c-badd-261ae6913249_medium.png?v=1713902427)
24X8 ND-RSD NO | Rectangular Damper | 24X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN] | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X8 ND-RSD NO
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![EWC Controls 20X14 ND-RSD NO Rectangular Damper | 20X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_2ffe9816-cd5d-4f37-b4b4-2b0d5543a23e_medium.png?v=1713902410)
20X14 ND-RSD NO | Rectangular Damper | 20X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 20X14 ND-RSD NO
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![EWC Controls 16X14 ND-RSD NO Rectangular Damper | 16X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_81d9b530-b070-4645-9128-38d13b0cf9b1_medium.png?v=1713902395)
16X14 ND-RSD NO | Rectangular Damper | 16X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 16X14 ND-RSD NO
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![EWC Controls 16X8 ND-RSD NO Rectangular Damper | 16X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_8e023a83-46fc-4a00-a607-86ce678f2054_medium.png?v=1713902410)
16X8 ND-RSD NO | Rectangular Damper | 16X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 16X8 ND-RSD NO
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![EWC Controls 12X12 ND-RSD NO Rectangular Damper | 12X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c94a2422-9dd3-4abf-a8a6-6eb0d32d1ed4_medium.png?v=1713902394)
12X12 ND-RSD NO | Rectangular Damper | 12X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 12X12 ND-RSD NO
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![EWC Controls 12X6 ND-RSD NO Rectangular Damper | 12X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_1052d306-0f6c-4c43-8be0-cc55a41c7205_medium.png?v=1713902358)
12X6 ND-RSD NO | Rectangular Damper | 12X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 12X6 ND-RSD NO
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![EWC Controls 10X6 ND-RSD NO Rectangular Damper | 10X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_59530bd4-b39e-4fe0-a88e-893cdc507a76_medium.png?v=1713902366)
10X6 ND-RSD NO | Rectangular Damper | 10X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 10X6 ND-RSD NO
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![iO HVAC Controls HD-3614 36 x 14 Rectangular Two-Position Zone Damper - 2 Wire Actuator | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_a8745174-f995-4a9d-bcbc-2bea087df9d9_medium.jpg?v=1715804943)
HD-3614 | 36 x 14 Rectangular Two-Position Zone Damper - 2 Wire Actuator | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-3614
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![iO HVAC Controls HD-3016 30 x 16 Rectangular Two-Position Zone Damper - 2 Wire Actuator | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_e04a5c30-8e7e-447e-9251-4c7cc66877d3_medium.jpg?v=1715804930)
HD-3016 | 30 x 16 Rectangular Two-Position Zone Damper - 2 Wire Actuator | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-3016
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![iO HVAC Controls HD-2020 20 x 20 Rectangular Two-Position Zone Damper - 2 Wire Actuator | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_4723637c-cb01-44f9-90b9-74e3a24d08f1_medium.jpg?v=1715804958)
HD-2020 | 20 x 20 Rectangular Two-Position Zone Damper - 2 Wire Actuator | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2020
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![iO HVAC Controls HD-3822 Rectangular 38 x 22 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_d1d64309-0c80-4c4d-81d7-78d757b32563_medium.jpg?v=1715804844)
HD-3822 | Rectangular 38 x 22 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-3822
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![iO HVAC Controls HD-3608-BM Rectangular 36 x 08 Zone Damper-BM | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_f534fe06-2a8c-4cf3-a803-54506fd594d2_medium.jpg?v=1715804917)
HD-3608-BM | Rectangular 36 x 08 Zone Damper-BM | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-3608-BM
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![iO HVAC Controls HD-3608 Rectangular 36 x 08 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_ffdacda1-7d87-4fb9-994e-a113eee0ccd3_medium.jpg?v=1715804912)
HD-3608 | Rectangular 36 x 08 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-3608
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![iO HVAC Controls HD-2610-BM Rectangular 26 x 10 Zone Damper-BM | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_4840f9f0-fc3a-44d7-8eae-f8dc8faff9a9_medium.jpg?v=1715804897)
HD-2610-BM | Rectangular 26 x 10 Zone Damper-BM | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2610-BM
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![iO HVAC Controls HD-2424 Rectangular 24 x 24 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_7892f4ed-9502-4991-bf9c-588b2257fe33_medium.jpg?v=1715804916)
HD-2424 | Rectangular 24 x 24 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2424
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![iO HVAC Controls HD-2418 Rectangular 24 x 18 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_e531782d-faad-407f-aefd-e1a8c0b5e369_medium.jpg?v=1715804903)
HD-2418 | Rectangular 24 x 18 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2418
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![iO HVAC Controls HD-2410-BM Rectangular 24 x 10 Zone Damper-BM | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_8cea99fb-f753-4c1c-b88b-692c64bfd9d8_medium.jpg?v=1715804898)
HD-2410-BM | Rectangular 24 x 10 Zone Damper-BM | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2410-BM
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![iO HVAC Controls HD-2408 Rectangular 24 x 08 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_b5a87ee6-1273-4e96-b6ea-f19b587f19a4_medium.jpg?v=1715804931)
HD-2408 | Rectangular 24 x 08 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2408
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![iO HVAC Controls HD-2210-BM Rectangular 22 x 10 Zone Damper-BM | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_b000339a-d677-4962-b01a-d71a8025e942_medium.jpg?v=1715804903)
HD-2210-BM | Rectangular 22 x 10 Zone Damper-BM | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2210-BM
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![iO HVAC Controls HD-2210 Rectangular 22 x 10 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_b343535a-c70a-4308-b331-04e636504c34_medium.jpg?v=1715804907)
HD-2210 | Rectangular 22 x 10 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2210
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![iO HVAC Controls HD-2208-BM Rectangular 22 x 08 Zone Damper-BM | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_b6b490a1-6b1e-4e54-82b1-88a0ec71cd51_medium.jpg?v=1715804948)
HD-2208-BM | Rectangular 22 x 08 Zone Damper-BM | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2208-BM
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