Io hvac controls Spring return (nc) Spring return
I/O HVAC controls and building automation systems for controlling HVAC equipment and integrating it with building management systems. Order now at Blackhawk Supply.
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![iO HVAC Controls HD-2016-PO 20 x 16 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_41571ae4-2be2-4214-aa3c-4beefe3ec99e_medium.jpg?v=1719992292)
HD-2016-PO | 20 x 16 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2016-PO
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![iO HVAC Controls HD-2012-PO 20 x 12 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_6d8b8b03-1619-4473-a6f7-4733c0aea358_medium.jpg?v=1719992160)
HD-2012-PO | 20 x 12 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2012-PO
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![iO HVAC Controls HD-2008-PO 20 x 08 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_379c0212-5b01-4e5d-8ebb-9d6a4b8b299f_medium.jpg?v=1719992246)
HD-2008-PO | 20 x 08 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2008-PO
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![iO HVAC Controls HD-1818-PO 18 x 18 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_45a533ea-898f-47e0-98ed-ea622b0885d7_medium.jpg?v=1719992221)
HD-1818-PO | 18 x 18 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1818-PO
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![iO HVAC Controls HD-1814-PO 18 x 14 Rectangular Two-Position Zone Damper - 2 Wire Actuator HD-1814-PO | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_8e6c8cc5-0f55-4f25-89e3-6d39a4e058e0_medium.jpg?v=1719992210)
HD-1814-PO | 18 x 14 Rectangular Two-Position Zone Damper - 2 Wire Actuator HD-1814-PO | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1814-PO
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![iO HVAC Controls HD-1812-PO 18 x 12 Rectangular Two-Position Zone Damper - 2 Wire Actuator HD-1812-PO | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_febbc14b-2b60-400b-8785-5ecbf770944f_medium.jpg?v=1719992231)
HD-1812-PO | 18 x 12 Rectangular Two-Position Zone Damper - 2 Wire Actuator HD-1812-PO | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1812-PO
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![iO HVAC Controls HD-1808-PO 18 x 8 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_541b1611-5975-4ee9-8d97-47cc91d3de90_medium.jpg?v=1719992160)
HD-1808-PO | 18 x 8 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1808-PO
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![iO HVAC Controls HD-1806-PO 18 x 06 Rectangular Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_4bf8aecb-acec-4592-8fd1-7f17284760a7_medium.jpg?v=1719992227)
HD-1806-PO | 18 x 06 Rectangular Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1806-PO
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![iO HVAC Controls HD-1614-PO 16 x 14 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_a447a5b9-4369-4c23-ab0c-a7fc6d03f5f4_medium.jpg?v=1719992226)
HD-1614-PO | 16 x 14 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1614-PO
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![iO HVAC Controls HD-1612-PO 16 x 12 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_57f2e541-a1a9-46b6-be0e-e83eac6a250c_medium.jpg?v=1719992161)
HD-1612-PO | 16 x 12 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1612-PO
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![iO HVAC Controls HD-1414-PO 14 x 14 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_a926c027-e8db-4745-bf62-a16638f015c9_medium.jpg?v=1719992256)
HD-1414-PO | 14 x 14 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1414-PO
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![iO HVAC Controls HD-1412-PO 14 x 12 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_fc5ac0df-5c8c-4a07-a99e-ee06c13aca3a_medium.jpg?v=1719992206)
HD-1412-PO | 14 x 12 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1412-PO
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![iO HVAC Controls HD-1410-PO 14 x 10 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_672f63a2-8cac-43a6-a837-af7d7051d461_medium.jpg?v=1719992257)
HD-1410-PO | 14 x 10 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1410-PO
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![iO HVAC Controls HD-1406-PO 14 x 06 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_82f7b246-dc53-40ec-94ab-ac7eadedbda6_medium.jpg?v=1719992181)
HD-1406-PO | 14 x 06 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1406-PO
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![iO HVAC Controls HD-1212-PO 12 x 12 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_6cb55732-026a-42cf-a162-6d01b1609c6e_medium.jpg?v=1719992232)
HD-1212-PO | 12 x 12 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1212-PO
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![iO HVAC Controls HD-1210-PO 12 x 10 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_2b8064da-ad0f-4464-8eb7-6bf1281a984d_medium.jpg?v=1719992266)
HD-1210-PO | 12 x 10 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1210-PO
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![iO HVAC Controls HD-1206-PO 12 x 06 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_15c23799-2d22-4a80-a080-b3908e99868d_medium.jpg?v=1719992265)
HD-1206-PO | 12 x 06 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1206-PO
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![iO HVAC Controls HD-1008-PO 10 x 08 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_a9f44d3e-201f-4f28-a4e5-6f96e1a371c4_medium.jpg?v=1719992160)
HD-1008-PO | 10 x 08 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1008-PO
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![iO HVAC Controls HD-1006-PO 10 x 06 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_a01bf7f3-8cbd-46d5-9c65-b203697ee1a6_medium.jpg?v=1719992257)
HD-1006-PO | 10 x 06 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1006-PO
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![iO HVAC Controls HD-0806-PO 08 x 06 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_d4ab2c6d-f37f-4da3-822f-7d53ba15a1ad_medium.jpg?v=1719992211)
HD-0806-PO | 08 x 06 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-0806-PO
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![iO HVAC Controls MBD-3822 Manual Rectangular 38 x 22 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/balancing_damper_rect_575040ad-379d-4d4e-b769-7ddbee9224f2_medium.jpg?v=1719992475)
MBD-3822 | Manual Rectangular 38 x 22 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-3822
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![iO HVAC Controls MBD-3810-BM Manual Rectangular 38 x 10 Zone Damper-BM | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/balancing_damper_rect_dcfbf66b-895b-41e7-b351-601357cdf6a4_medium.jpg?v=1719992455)
MBD-3810-BM | Manual Rectangular 38 x 10 Zone Damper-BM | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-3810-BM
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![iO HVAC Controls MBD-3624-BM Manual Rectangular 36 x 24 Zone Damper-BM | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/balancing_damper_rect_5d77b1c6-52c5-4bd2-b0a2-12a6517b1a91_medium.jpg?v=1719992391)
MBD-3624-BM | Manual Rectangular 36 x 24 Zone Damper-BM | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-3624-BM
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![iO HVAC Controls MBD-3624 Manual Rectangular 36 x 24 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/balancing_damper_rect_92e47524-1852-409f-bdf2-9c78db603474_medium.jpg?v=1719992420)
MBD-3624 | Manual Rectangular 36 x 24 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-3624
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