Dampers 28 x 20 Size (in)
From rectangular to motorized dampers, from bypass dampers to zoning panels: we’ve got it all! Find what you are looking for in our stock of over 2,000 products.
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![EWC Controls 28X20 ND-RSD NO Rectangular Damper | 28X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_725e0f11-3da7-42c5-b9c9-6ea68f326c60_medium.png?v=1713902451)
28X20 ND-RSD NO | Rectangular Damper | 28X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 28X20 ND-RSD NO
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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/products/iO-MDXXXX_fc6c73fa-a483-4e3f-b095-a2dfd54f6df4_medium.jpg?v=1708912688)
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-BM 28 x 20 Rectangular Two-Position Zone Damper - 2 Wire Actuator - Bottom Mount | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-HDXXXX_dd5edb59-f34d-4d83-abdc-7467c562272a_medium.jpg?v=1715804930)
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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![iO HVAC Controls MBD-2820 Manual Rectangular 28 x 20 Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/balancing_damper_rect_8328a37a-b9aa-41d2-bffe-a2000ceae278_medium.jpg?v=1708912729)
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/products/RheemRectangular_db4fe810-402a-4057-9aa9-d8ed448b88f1_medium.jpg?v=1708912697)
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 TD-2820 Trane 28 x 20 Rectangular Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-TDXXXX_eb254aaa-12e7-46f7-8b1d-a2351772a84e_medium.jpg?v=1708912822)
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 MD-2820 MD Series 28x20 (3) Wire Damper PO/PC | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-MDXXXX_5937ba7e-848d-4625-9caf-6718cc4e43a1_medium.jpg?v=1708912641)
MD-2820 | MD Series 28x20 (3) Wire Damper PO / PC | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MD-2820
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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_37587c2c-d82d-4999-80a2-e9725cb3273b_medium.jpg?v=1715804962)
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 CD-2820 Carrier 28 x 20 Rectangular Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-CDXXXX_7516e648-e627-4170-bf2c-05036e8f2235_medium.jpg?v=1708912415)
CD-2820 | Carrier 28 x 20 Rectangular Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: CD-2820
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![EWC Controls 28X20 ND-RSD NC Rectangular Damper | 28X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_540784f4-6f3b-4443-b482-6e00768e372e_medium.png?v=1713902470)
28X20 ND-RSD NC | Rectangular Damper | 28X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 28X20 ND-RSD NC
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![EWC Controls 28X20 ND Rectangular Damper | 28X20 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/nd_9cb207c4-d536-4676-8202-c995ccf6ec4f_medium.png?v=1710946399)
28X20 ND | Rectangular Damper | 28X20 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 28X20 ND
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