round dampers
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![iO HVAC Controls MD-1812 MD Series 18x12 (3) Wire Damper PO/PC | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-MDXXXX_68c0bb4b-d10e-4b62-a77b-204f16a61eb4_medium.jpg?v=1719992424)
MD-1812 | MD Series 18x12 (3) Wire Damper PO / PC | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MD-1812
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![iO HVAC Controls MD-1212 MD Series 12x12 (3) Wire Damper PO/PC | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-MDXXXX_7fb6ae13-a725-4777-9207-bc3c99b785f0_medium.jpg?v=1719992419)
MD-1212 | MD Series 12x12 (3) Wire Damper PO / PC | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MD-1212
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![iO HVAC Controls MD-2424 MD Series 24x24 (3) Wire Damper PO/PC | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-MDXXXX_8370fa57-d14c-434c-a462-c254bfc9e728_medium.jpg?v=1719992416)
MD-2424 | MD Series 24x24 (3) Wire Damper PO / PC | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MD-2424
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![iO HVAC Controls RM-07 Rheem 7" Round Zone Damper, 35 second Belimo actuator | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/RheemRound_f713d9a3-6262-45fc-a84c-17883c7ef08b_medium.jpg?v=1719992390)
RM-07 | Rheem 7" Round Zone Damper, 35 second Belimo actuator | iO HVAC Controls
Brand: iO HVAC Controls
SKU: RM-07
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![iO HVAC Controls MD-1006 MD Series 10x06 (3) Wire Damper PO/PC | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-MDXXXX_38edf366-25b9-4e3c-b462-76b2fdcb66cf_medium.jpg?v=1719992386)
MD-1006 | MD Series 10x06 (3) Wire Damper PO / PC | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MD-1006
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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 iO-FAV-12 Fresh air ventilation control panel, 12" round 2-position damper, 120/24 20VA transformer | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-FAV-12_medium.jpg?v=1719992342)
iO-FAV-12 | Fresh air ventilation control panel, 12" round 2-position damper, 120 / 24 20VA transformer | iO HVAC Controls
Brand: iO HVAC Controls
SKU: iO-FAV-12
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![iO HVAC Controls iO-FAV-06-PLUS Fresh air ventilation control panel, 6" round 2-position damper, 120/24 20VA transformer, includes ODT & Humidistat | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-FAV-06-PLUS_medium.jpg?v=1719992332)
iO-FAV-06-PLUS | Fresh air ventilation control panel, 6" round 2-position damper, 120 / 24 20VA transformer, includes ODT & Humidistat | iO HVAC Controls
Brand: iO HVAC Controls
SKU: iO-FAV-06-PLUS
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![iO HVAC Controls HD-NA-2206 22 x 06 Two-Position Zone Damper-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_b679eaca-bd96-4492-aaf7-8b2e408de93b_medium.png?v=1719992331)
HD-NA-2206 | 22 x 06 Two-Position Zone Damper-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-2206
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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 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-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-2418 24 x 18 Two-Position Zone Damper -No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_3edbfb43-ae15-411f-9d4e-3a3fc930653c_medium.png?v=1719992301)
HD-NA-2418 | 24 x 18 Two-Position Zone Damper -No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-NA-2418
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![iO HVAC Controls EB-2212 Electronic 22 x 12 Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-EB-XXXX_3929484c-78ca-4aff-8250-c227b3f7e7b0_medium.jpg?v=1719992296)
EB-2212 | Electronic 22 x 12 Bypass Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: EB-2212
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![iO HVAC Controls HD-BM-NA-3606 36 x 06 Two-Position Zone Damper - Bottom Mount-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_6e79f338-422c-4b31-9ecf-2dfcc576c7a7_medium.png?v=1719992291)
HD-BM-NA-3606 | 36 x 06 Two-Position Zone Damper - Bottom Mount-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-BM-NA-3606
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![iO HVAC Controls HD-BM-NA-3412 34 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_72c15c54-78d5-4602-9d27-2fdb6c481e6a_medium.png?v=1719992291)
HD-BM-NA-3412 | 34 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-3412
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![iO HVAC Controls HD-BM-NA-1208 12 x 08 Two-Position Zone Damper - Bottom Mount-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_2b6b5d3d-e6f9-4b37-ad96-1ac8dda94a87_medium.png?v=1719992286)
HD-BM-NA-1208 | 12 x 08 Two-Position Zone Damper - Bottom Mount-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-BM-NA-1208
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![iO HVAC Controls EB-2416 Electronic 24 x 16 Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-EB-XXXX_fd25f630-653f-444d-8010-7ba0f0b93cf4_medium.jpg?v=1719992275)
EB-2416 | Electronic 24 x 16 Bypass Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: EB-2416
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![iO HVAC Controls EB-3014 Electronic 30 x 14 Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-EB-XXXX_9093c5aa-236a-4100-b8bc-e93ddf5d8c33_medium.jpg?v=1719992266)
EB-3014 | Electronic 30 x 14 Bypass Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: EB-3014
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![iO HVAC Controls EB-2424 Electronic 24 x 24 Bypass Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-EB-XXXX_f4a9e819-755f-4df4-91e6-ed91e938c2e0_medium.jpg?v=1719992256)
EB-2424 | Electronic 24 x 24 Bypass Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: EB-2424
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![iO HVAC Controls HD-BM-NA-2816 28 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_f527ff1a-a540-4374-970e-b6a5a093947a_medium.png?v=1719992251)
HD-BM-NA-2816 | 28 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-2816
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![iO HVAC Controls EB-1210-BM 12 x 10 Heavy Duty Motorized Bypass Damper - Bottom Mount | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-EB-XXXX_bdff6e11-4c69-420d-a14d-bd8f377803ab_medium.jpg?v=1719992251)
EB-1210-BM | 12 x 10 Heavy Duty Motorized Bypass Damper - Bottom Mount | iO HVAC Controls
Brand: iO HVAC Controls
SKU: EB-1210-BM
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![iO HVAC Controls HD-BM-NA-2608 26 x 08 Two-Position Zone Damper - Bottom Mount-No Actuator, 5/8-1/2 Shaft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HD-NA-XXXX_09e834c4-b34b-49cb-9432-671c80789343_medium.png?v=1719992247)
HD-BM-NA-2608 | 26 x 08 Two-Position Zone Damper - Bottom Mount-No Actuator, 5 / 8-1 / 2 Shaft | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-BM-NA-2608
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![iO HVAC Controls HD-BM-NA-2616 26 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_b12c6051-86a5-4058-b3aa-bf06df39a2e6_medium.png?v=1719992242)
HD-BM-NA-2616 | 26 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-2616
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