Round motorized dampers iO HVAC Controls
Round motorized dampers for HVAC systems. For automated control of airflow in round ductwork. Actuator-driven butterfly or louvered dampers available, shop now!
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![iO HVAC Controls TD-06 Trane 6" Round Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-TDXX_636afe39-7795-484e-afa1-184e2d5849a6_medium.jpg?v=1708912755)
TD-06 | Trane 6" Round Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: TD-06
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![iO HVAC Controls TD-05 Trane 5" Round Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-TDXX_b9b44ad7-e053-4790-a903-17789da90b1e_medium.jpg?v=1708912777)
TD-05 | Trane 5" Round Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: TD-05
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![iO HVAC Controls TD-04 Trane 4" Round Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-TDXX_a57c31bd-d487-432a-9d98-da63b1ea81d1_medium.jpg?v=1708912781)
TD-04 | Trane 4" Round Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: TD-04
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![iO HVAC Controls RD-09 Round 9" Retro Damper, 3 wire actuator | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-RD_6263e00a-babb-45ec-b980-52a3d3670ddc_medium.jpg?v=1708912636)
RD-09 | Round 9" Retro Damper, 3 wire actuator | iO HVAC Controls
Brand: iO HVAC Controls
SKU: RD-09
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![iO HVAC Controls RD-08 Round 8" Retro Damper, 3 wire actuator | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-RD_medium.jpg?v=1708912689)
RD-08 | Round 8" Retro Damper, 3 wire actuator | iO HVAC Controls
Brand: iO HVAC Controls
SKU: RD-08
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![iO HVAC Controls RD-05 Round 5" Retro Damper, 3 wire actuator | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-RD_97be8684-d71c-4a55-8d1d-a31acebf7b8d_medium.jpg?v=1708912645)
RD-05 | Round 5" Retro Damper, 3 wire actuator | iO HVAC Controls
Brand: iO HVAC Controls
SKU: RD-05
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![iO HVAC Controls MD-20 MD Series 20" Round 3 Wire Damper PO/PC | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-MDXX_82b1f997-ffc6-464c-bccf-74649d7d3e26_medium.jpg?v=1708912715)
MD-20 | MD Series 20" Round 3 Wire Damper PO / PC | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MD-20
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![iO HVAC Controls MD-09 MD Series 9" Round (3) Wire Damper PO/PC | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-MDXX_medium.jpg?v=1708912688)
MD-09 | MD Series 9" Round (3) Wire Damper PO / PC | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MD-09
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![iO HVAC Controls MD-05 MD Series 5" Round (3) Wire Damper PO/PC | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-MDXX_98b6960a-0eef-4a5e-b303-6aeecbe467ab_medium.jpg?v=1708912706)
MD-05 | MD Series 5" Round (3) Wire Damper PO / PC | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MD-05
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![iO HVAC Controls EB-22 Electronic 22" Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-EB-XX_medium.jpg?v=1708912464)
EB-22 | Electronic 22" Bypass Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: EB-22
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![iO HVAC Controls EB-14 Electronic 14" Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-EB-XX_6b8b080b-a5f3-4f77-b6b7-75893ca14f8b_medium.jpg?v=1708912437)
EB-14 | Electronic 14" Bypass Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: EB-14
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![iO HVAC Controls EB-12 Electronic 12" Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-EB-XX_abcea1be-ec9b-41fd-babb-eee7b473225d_medium.jpg?v=1708912437)
EB-12 | Electronic 12" Bypass Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: EB-12
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![iO HVAC Controls EB-10 Electronic 10" Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-EB-XX_88fd1cb4-dabe-4c54-8362-978d8480b50b_medium.jpg?v=1708912492)
EB-10 | Electronic 10" Bypass Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: EB-10
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![iO HVAC Controls EB-09 Electronic 9" Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-EB-XXXX_deb212b9-493d-44bc-b6b8-074e0baaa253_medium.jpg?v=1708912428)
EB-09 | Electronic 9" Bypass Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: EB-09
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![iO HVAC Controls EB-08 Electronic 8" Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-EB-XX_ddd9e907-b69c-4f28-896a-6b5f3d491ec3_medium.jpg?v=1708912488)
EB-08 | Electronic 8" Bypass Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: EB-08
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![iO HVAC Controls D-Z1-18 Zone One 18" Damper Assembly | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-DZ-XX_web_c5fe9f2e-dde4-4dc7-b19d-ce5691ca617b_medium.jpg?v=1708912511)
D-Z1-18 | Zone One 18" Damper Assembly | iO HVAC Controls
Brand: iO HVAC Controls
SKU: D-Z1-18
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![iO HVAC Controls D-Z1-16 Zone One 16" Damper Assembly | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-DZ-XX_web_f88169e6-c530-47f1-b000-4c2f3dfa0fbb_medium.jpg?v=1708912487)
D-Z1-16 | Zone One 16" Damper Assembly | iO HVAC Controls
Brand: iO HVAC Controls
SKU: D-Z1-16
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![iO HVAC Controls D-Z1-14 Zone One 14" Damper Assembly | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-DZ-XX_web_f3e2e4c6-fc00-4ca1-b9cd-5b1c8b2df469_medium.jpg?v=1708912383)
D-Z1-14 | Zone One 14" Damper Assembly | iO HVAC Controls
Brand: iO HVAC Controls
SKU: D-Z1-14
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![iO HVAC Controls D-Z1-12 Zone One 12" Damper Assembly | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-DZ-XX_web_676e779a-fcb7-4fdd-ab84-bacb07273f00_medium.jpg?v=1708912406)
D-Z1-12 | Zone One 12" Damper Assembly | iO HVAC Controls
Brand: iO HVAC Controls
SKU: D-Z1-12
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![iO HVAC Controls D-Z1-09 Zone One 9" Damper Assembly | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-DZ-XX_web_6bd86a06-f7b3-41a9-aafa-16648de98266_medium.jpg?v=1708912419)
D-Z1-09 | Zone One 9" Damper Assembly | iO HVAC Controls
Brand: iO HVAC Controls
SKU: D-Z1-09
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![iO HVAC Controls D-Z1-08 Zone One 8" Damper Assembly | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-DZ-XX_web_d1ce7559-70f6-426f-b6f8-02d1bff890a9_medium.jpg?v=1708912370)
D-Z1-08 | Zone One 8" Damper Assembly | iO HVAC Controls
Brand: iO HVAC Controls
SKU: D-Z1-08
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![iO HVAC Controls D-Z1-07 Zone One 7" Damper Assembly | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-DZ-XX_web_eef8cf72-d134-4c0c-849e-5207443af37c_medium.jpg?v=1708912419)
D-Z1-07 | Zone One 7" Damper Assembly | iO HVAC Controls
Brand: iO HVAC Controls
SKU: D-Z1-07
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![iO HVAC Controls D-Z1-06 Zone One 6" Damper Assembly | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-DZ-XX_web_525ceeb8-0980-4266-a26c-0a0d6072788d_medium.jpg?v=1708912415)
D-Z1-06 | Zone One 6" Damper Assembly | iO HVAC Controls
Brand: iO HVAC Controls
SKU: D-Z1-06
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![iO HVAC Controls D-18-PO Round 18" Fresh Air Damper, 24V, PO/SC | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-DXX_eb95b627-c08d-4e81-bc82-2acbdb74ee4d_medium.jpg?v=1715804844)
D-18-PO | Round 18" Fresh Air Damper, 24V, PO / SC | iO HVAC Controls
Brand: iO HVAC Controls
SKU: D-18-PO
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