dampers
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![iO HVAC Controls HD-NA-1810 18 x 10 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_1bafc6ae-10cf-41e3-8de3-0c87016b5574_medium.png?v=1719992322)
HD-NA-1810 | 18 x 10 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-1810
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![iO HVAC Controls HD-NA-2610 26 x 10 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_2d6d6496-0690-4b7f-b678-7d735887f2c6_medium.png?v=1719992322)
HD-NA-2610 | 26 x 10 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-2610
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![iO HVAC Controls HD-3026 Rectangular 30 x 26 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_ba409c43-ab39-44f1-84c8-ab07faa1a881_medium.jpg?v=1719992322)
HD-3026 | Rectangular 30 x 26 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-3026
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![iO HVAC Controls HD-NA-1006 10 x 06 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_47e5706e-8ec5-4125-8796-030a474b1821_medium.png?v=1719992322)
HD-NA-1006 | 10 x 06 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-1006
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![iO HVAC Controls iO-FAV-09-PLUS Fresh air ventilation control panel, 9" round 2-position damper, 120/24 20VA transformer, includes ODT & Humidistat | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-FAV-09-PLUS_medium.jpg?v=1719992317)
iO-FAV-09-PLUS | Fresh air ventilation control panel, 9" round 2-position damper, 120 / 24 20VA transformer, includes ODT & Humidistat | iO HVAC Controls
Brand: iO HVAC Controls
SKU: iO-FAV-09-PLUS
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![iO HVAC Controls HD-NA-3214 32 x 14 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_f789b6ec-2e65-44a9-8dec-b559df77ce43_medium.png?v=1719992322)
HD-NA-3214 | 32 x 14 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-3214
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![iO HVAC Controls HD-NA-2820 28 x 20 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_d854e023-4469-41a4-8a59-6c23eb82f569_medium.png?v=1719992317)
HD-NA-2820 | 28 x 20 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-2820
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![iO HVAC Controls HD-BM-NA-3810 38 x 10 Two-Position Zone Damper - Bottom Mount-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_69b2a44f-8733-428f-b571-14a09359a5c1_medium.png?v=1719992317)
HD-BM-NA-3810 | 38 x 10 Two-Position Zone Damper - Bottom Mount-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-BM-NA-3810
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![iO HVAC Controls iO-FAV-07-PLUS Fresh air ventilation control panel, 7" round 2-position damper, 120/24 20VA transformer, includes ODT & Humidistat | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-FAV-07-PLUS_medium.jpg?v=1719992317)
iO-FAV-07-PLUS | Fresh air ventilation control panel, 7" round 2-position damper, 120 / 24 20VA transformer, includes ODT & Humidistat | iO HVAC Controls
Brand: iO HVAC Controls
SKU: iO-FAV-07-PLUS
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![iO HVAC Controls HD-NA-3008 30 x 08 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_5814576b-400d-47d8-8ac8-879bd893e577_medium.png?v=1719992317)
HD-NA-3008 | 30 x 08 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-3008
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![iO HVAC Controls HD-NA-1816 18 x 16 Two-Position Zone Damper -No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_905bb8ea-a275-4ff5-bd33-108d50b4581a_medium.png?v=1719992318)
HD-NA-1816 | 18 x 16 Two-Position Zone Damper -No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-1816
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![iO HVAC Controls HD-NA-1806 18 x 06 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_9a5a35b3-804a-4839-8cfe-2e93b9fd4c3a_medium.png?v=1719992317)
HD-NA-1806 | 18 x 06 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-1806
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![iO HVAC Controls HD-NA-1406 14 x 06 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_20b23f87-9313-44bc-a8ba-bfcb25a23853_medium.png?v=1719992317)
HD-NA-1406 | 14 x 06 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-1406
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![iO HVAC Controls HD-BM-NA-3616 36 x 16 Two-Position Zone Damper - Bottom Mount-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_b02c8b3e-1cd9-4832-8099-685792e3f62e_medium.png?v=1719992317)
HD-BM-NA-3616 | 36 x 16 Two-Position Zone Damper - Bottom Mount-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-BM-NA-3616
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![iO HVAC Controls HD-NA-2824 28 x 24 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_077e20a4-02fa-41e4-a3a5-704b199ee801_medium.png?v=1719992317)
HD-NA-2824 | 28 x 24 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-2824
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![iO HVAC Controls HD-BM-NA-3812 38 x 12 Two-Position Zone Damper - Bottom Mount-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_e8b5a49c-c1bb-40ab-a3a9-dbc7de6bbb55_medium.png?v=1719992313)
HD-BM-NA-3812 | 38 x 12 Two-Position Zone Damper - Bottom Mount-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-BM-NA-3812
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![iO HVAC Controls HD-NA-3024 30 x 24 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_49309ef1-5c43-4cb0-8057-f4f66bb447bd_medium.png?v=1719992317)
HD-NA-3024 | 30 x 24 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-3024
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![iO HVAC Controls HD-NA-2814 28 x 14 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_36634dff-9da3-41c8-a83d-9b5c5f25f908_medium.png?v=1719992313)
HD-NA-2814 | 28 x 14 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-2814
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![iO HVAC Controls iO-FAV-ENH-06 Fresh air ventilation panel with transformer, junction box and wiring under single cover with 6" powered-open 2-wire damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-FAV-ENH-06_medium.jpg?v=1719992312)
iO-FAV-ENH-06 | Fresh air ventilation panel with transformer, junction box and wiring under single cover with 6" powered-open 2-wire damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: iO-FAV-ENH-06
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![iO HVAC Controls HD-NA-3012 30 x 12 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_21cfed48-44aa-4862-98a7-d9ebd11e589a_medium.png?v=1719992312)
HD-NA-3012 | 30 x 12 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-3012
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![iO HVAC Controls HD-NA-3010 30 x 10 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_6302679c-98c6-4f25-8c99-8f26d686bdcc_medium.png?v=1719992312)
HD-NA-3010 | 30 x 10 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-3010
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![iO HVAC Controls HD-NA-2620 26 x 20 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_4d57f7dc-1fd0-4a65-be67-0158c8254c4d_medium.png?v=1719992312)
HD-NA-2620 | 26 x 20 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-2620
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![iO HVAC Controls HD-NA-2812 28 x 12 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_30d70418-1794-42b1-9a3f-81117e1253ec_medium.png?v=1719992312)
HD-NA-2812 | 28 x 12 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-2812
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![iO HVAC Controls HD-NA-3018 30 x 18 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_8e065997-1007-4ae5-bcf0-39f5c5070645_medium.png?v=1719992312)
HD-NA-3018 | 30 x 18 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-3018
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