Dampers (hidden without zone panels) Spring return (no) Spring return
Zone dampers for HVAC systems without zone control panels. Order Individual 24V motorized dampers for creating HVAC zones today at Blackhawk Supply.
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![EWC Controls 20X8 ND-RSD NO Rectangular Damper | 20X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_95d2c3a0-f94e-4451-bb97-2f7ebbfac3f8_medium.png?v=1713902406)
20X8 ND-RSD NO | Rectangular Damper | 20X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 20X8 ND-RSD NO
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![EWC Controls 18X6 ND-RSD NO Rectangular Damper | 18X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_595d980c-181a-47e2-ab91-b8b9cdc10d5c_medium.png?v=1713902406)
18X6 ND-RSD NO | Rectangular Damper | 18X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 18X6 ND-RSD NO
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![EWC Controls 16X16 ND-RSD NO Rectangular Damper | 16X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_4b537f23-5fd9-4270-8340-6a0d142338b1_medium.png?v=1713902380)
16X16 ND-RSD NO | Rectangular Damper | 16X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 16X16 ND-RSD NO
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![EWC Controls 16X10 ND-RSD NO Rectangular Damper | 16X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_07a073a2-d8b6-4971-8191-1f65fbc0e133_medium.png?v=1713902437)
16X10 ND-RSD NO | Rectangular Damper | 16X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 16X10 ND-RSD NO
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![EWC Controls 14X14 ND-RSD NO Rectangular Damper | 14X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_b7cabd84-c580-43c4-92a8-a6c502a01916_medium.png?v=1713902385)
14X14 ND-RSD NO | Rectangular Damper | 14X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 14X14 ND-RSD NO
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![EWC Controls 14X12 ND-RSD NO Rectangular Damper | 14X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_df4c29b1-7b58-42c8-bc87-6c5af2404c4b_medium.png?v=1713902376)
14X12 ND-RSD NO | Rectangular Damper | 14X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 14X12 ND-RSD NO
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![EWC Controls 14X10 ND-RSD NO Rectangular Damper | 14X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_b82a1faf-ab07-4c07-b776-28745366a75c_medium.png?v=1713902355)
14X10 ND-RSD NO | Rectangular Damper | 14X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 14X10 ND-RSD NO
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![EWC Controls 14X8 ND-RSD NO Rectangular Damper | 14X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_621c382e-499d-4377-8595-194816a33377_medium.png?v=1713902380)
14X8 ND-RSD NO | Rectangular Damper | 14X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 14X8 ND-RSD NO
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![EWC Controls 14X6 ND-RSD NO Rectangular Damper | 14X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_835d87f5-22a2-4035-b004-029d2e013e1d_medium.png?v=1713902380)
14X6 ND-RSD NO | Rectangular Damper | 14X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 14X6 ND-RSD NO
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![EWC Controls 10X10 ND-RSD NO Rectangular Damper | 10X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_28424065-f05b-47fc-a45b-7dab4578e222_medium.png?v=1713902297)
10X10 ND-RSD NO | Rectangular Damper | 10X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 10X10 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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