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 MBD-2412 Manual Rectangular 24 x 12 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/balancing_damper_rect_1d067888-3943-4108-9b87-7d143c908e1a_medium.jpg?v=1719992396)
MBD-2412 | Manual Rectangular 24 x 12 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-2412
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![iO HVAC Controls MBD-1612 Manual Rectangular 16 x 12 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/balancing_damper_rect_62fcc511-356b-4099-8dbb-df2a624424d8_medium.jpg?v=1719992362)
MBD-1612 | Manual Rectangular 16 x 12 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-1612
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![iO HVAC Controls MBD-1610-BM Manual Rectangular 16 x 10 Zone Damper-BM | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/balancing_damper_rect_afcb3a04-f1e3-46a1-85a8-8869c2dc9040_medium.jpg?v=1719992362)
MBD-1610-BM | Manual Rectangular 16 x 10 Zone Damper-BM | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-1610-BM
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![iO HVAC Controls MBD-1212 Manual Rectangular 12 x 12 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/balancing_damper_rect_bac0a908-4329-420f-8075-ac35bd00e405_medium.jpg?v=1719992352)
MBD-1212 | Manual Rectangular 12 x 12 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-1212
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![iO HVAC Controls MBD-1208 Manual Rectangular 12 x 08 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/balancing_damper_rect_8467a3fb-76c3-40c2-95e3-5f4cc6ecc5ff_medium.jpg?v=1719992352)
MBD-1208 | Manual Rectangular 12 x 08 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-1208
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![iO HVAC Controls MBD-09 iO HVAC Controls Manual Balancing Damper 9 Round with locking quad | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/MBD-09_medium.jpg?v=1719992331)
MBD-09 | iO HVAC Controls Manual Balancing Damper 9 Round with locking quad | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-09
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![iO HVAC Controls HD-3612-PO 36 x 12 Two-Position Zone Damper Powered Open/Spring Closed | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_19f01989-d18c-41f9-8f57-010080c9a560_medium.jpg?v=1719992232)
HD-3612-PO | 36 x 12 Two-Position Zone Damper Powered Open / Spring Closed | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-3612-PO
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![iO HVAC Controls HD-1616-PO 16 x 16 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_7ee89edd-463f-4ee6-b082-598445d3e39e_medium.jpg?v=1719992201)
HD-1616-PO | 16 x 16 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1616-PO
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![iO HVAC Controls HD-1010-PO 10 x 10 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_44078d5b-68aa-48bc-a0ea-08db770e77da_medium.jpg?v=1719992186)
HD-1010-PO | 10 x 10 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-1010-PO
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![iO HVAC Controls HD-0808-PO 08 x 08 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_26b82c48-22a7-40e3-978d-c70c0c217a64_medium.jpg?v=1719992241)
HD-0808-PO | 08 x 08 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-0808-PO
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![iO HVAC Controls MBD-2424 Manual Rectangular 24 x 24 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/balancing_damper_rect_d01711c2-0304-4a0e-8504-e265e26de886_medium.jpg?v=1719992499)
MBD-2424 | Manual Rectangular 24 x 24 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-2424
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![iO HVAC Controls MBD-2408 Manual Rectangular 24 x 08 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/balancing_damper_rect_aec99bfe-a77f-45b5-8d26-d40c30fc44f2_medium.jpg?v=1719992382)
MBD-2408 | Manual Rectangular 24 x 08 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-2408
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![iO HVAC Controls MBD-2208 Manual Rectangular 22 x 08 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/balancing_damper_rect_380f3cf7-8f8d-4f01-90bf-927465725bfe_medium.jpg?v=1719992415)
MBD-2208 | Manual Rectangular 22 x 08 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-2208
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![iO HVAC Controls MBD-1808-BM Manual Rectangular 18 x 08 Zone Damper-BM | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/balancing_damper_rect_d07103f0-36c2-47e6-ba95-d389f0327845_medium.jpg?v=1720007091)
MBD-1808-BM | Manual Rectangular 18 x 08 Zone Damper-BM | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-1808-BM
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![iO HVAC Controls MBD-1412-BM Manual Rectangular 14 x 12 Zone Damper-BM | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/balancing_damper_rect_a39b615b-de89-41b6-9269-4e2c8ccd9e6c_medium.jpg?v=1719992358)
MBD-1412-BM | Manual Rectangular 14 x 12 Zone Damper-BM | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-1412-BM
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![iO HVAC Controls MBD-07 iO HVAC Controls Manual Balancing Damper 7 Round with locking quad | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/MBD-07_medium.jpg?v=1719992357)
MBD-07 | iO HVAC Controls Manual Balancing Damper 7 Round with locking quad | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-07
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![iO HVAC Controls HD-3022-PO 30 x 22 Rectangular Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_b406870a-0150-4977-8aeb-0a183b189373_medium.jpg?v=1719992297)
HD-3022-PO | 30 x 22 Rectangular Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-3022-PO
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![iO HVAC Controls HD-3020-PO 30 x 20 Two-Position Zone Damper Powered Open/Spring Closed | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_96b2926f-0cbe-4670-ac66-bc1bc59423ff_medium.jpg?v=1719992291)
HD-3020-PO | 30 x 20 Two-Position Zone Damper Powered Open / Spring Closed | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-3020-PO
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![iO HVAC Controls HD-3012-PO 30 x 12 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_bf76650f-3595-4292-a65c-28d607d89d9b_medium.jpg?v=1719992286)
HD-3012-PO | 30 x 12 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-3012-PO
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![iO HVAC Controls HD-2420-PO 24 x 20 Heavy-Duty Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_638a88c9-b506-4e0a-a9e8-c5b368d2797b_medium.jpg?v=1719992241)
HD-2420-PO | 24 x 20 Heavy-Duty Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2420-PO
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![iO HVAC Controls HD-2410-PO 24 x 10 Heavy-Duty Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_830dd8d9-f88e-441e-b0a7-21faa245e212_medium.jpg?v=1719992301)
HD-2410-PO | 24 x 10 Heavy-Duty Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2410-PO
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![iO HVAC Controls HD-2408-PO 24 x 08 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_be13ce16-4b73-44d5-92c7-7cc57c73fe7a_medium.jpg?v=1719992191)
HD-2408-PO | 24 x 08 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2408-PO
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![iO HVAC Controls HD-2220-PO 22 x 20 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_a71fa7a1-707f-48ac-8b38-08a1e02bf202_medium.jpg?v=1719992160)
HD-2220-PO | 22 x 20 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2220-PO
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![iO HVAC Controls HD-2020-PO 20 x 20 Two-Position Zone Damper - Powered Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_9f136894-7e35-48e3-8187-38fa1407ec96_medium.jpg?v=1719992171)
HD-2020-PO | 20 x 20 Two-Position Zone Damper - Powered Open | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2020-PO
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