Zone dampers 28 x 20 Size (in)
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![iO HVAC Controls TD-2820 Trane 28 x 20 Rectangular Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-TDXXXX_9824f08f-8f20-4b27-bbe8-a6b383b2e542_medium.jpg?v=1719992568)
TD-2820 | Trane 28 x 20 Rectangular Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: TD-2820
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![iO HVAC Controls MBD-2820 Manual Rectangular 28 x 20 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/balancing_damper_rect_ffa62717-423f-429e-8e7f-6a00b3cb45ba_medium.jpg?v=1719992484)
MBD-2820 | Manual Rectangular 28 x 20 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MBD-2820
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![iO HVAC Controls RM-2820 Rheem 28 x 20 Rectangular Zone Damper, 35 second Belimo actuator | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/RheemRectangular_060735f1-8ea9-45f1-9ef6-e00387bc0ea8_medium.jpg?v=1719992450)
RM-2820 | Rheem 28 x 20 Rectangular Zone Damper, 35 second Belimo actuator | iO HVAC Controls
Brand: iO HVAC Controls
SKU: RM-2820
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![iO HVAC Controls MD-2820-BM 28" x 20" Rectangular 2 Position Zone- Bottom Mount Damper - Belimo 3 Wire Actuator | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-MDXXXX_2fdca913-d5b2-46fa-b5b6-26bb426beff4_medium.jpg?v=1719992439)
MD-2820-BM | 28" x 20" Rectangular 2 Position Zone- Bottom Mount Damper - Belimo 3 Wire Actuator | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MD-2820-BM
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![iO HVAC Controls HD-2820 Rectangular 28 x 20 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_b8b8e1e7-9cc3-4842-b3b0-9221263aa308_medium.jpg?v=1719992281)
HD-2820 | Rectangular 28 x 20 Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2820
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![iO HVAC Controls HD-2820-BM 28 x 20 Rectangular Two-Position Zone Damper - 2 Wire Actuator - Bottom Mount | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_0ed85245-f8e2-4cd9-bf65-324cb91c513f_medium.jpg?v=1719992242)
HD-2820-BM | 28 x 20 Rectangular Two-Position Zone Damper - 2 Wire Actuator - Bottom Mount | iO HVAC Controls
Brand: iO HVAC Controls
SKU: HD-2820-BM
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