Round motorized dampers 4 Size (in)
Round motorized dampers for HVAC systems. For automated control of airflow in round ductwork. Actuator-driven butterfly or louvered dampers available, shop now!
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![EWC Controls 4 URD 4 Inch Round Motorized Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sm_93609f5b-2e84-4b5f-accc-ef8ee96d99eb_medium.gif?v=1713902524)
4 URD | 4 Inch Round Motorized Damper | EWC Controls
Brand: EWC Controls
SKU: 4 URD
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![EWC Controls 4 RSD 4 Inch Round Motorized Spring Return Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/rsd_ec036dc6-d760-49a9-aab5-7433a4cf8f9e_medium.png?v=1713902480)
4 RSD | 4 Inch Round Motorized Spring Return Damper | EWC Controls
Brand: EWC Controls
SKU: 4 RSD
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![iO HVAC Controls MD-04 MD Series 4" Round (3) Wire Damper PO/PC | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-MDXX_836375aa-68c7-4db2-9abb-2c67fb8a5d79_medium.jpg?v=1708912693)
MD-04 | MD Series 4" Round (3) Wire Damper PO / PC | iO HVAC Controls
Brand: iO HVAC Controls
SKU: MD-04
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![Braeburn 129004 Round Damper | 4" Round Motorized Damper Spring Return - Normally Closed | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/PO_SR-Round_ccbc7ee0-930f-43d5-a79b-0e4fca617114_medium.jpg?v=1708892733)
129004 | Round Damper | 4" Round Motorized Damper Spring Return - Normally Closed | Braeburn
Brand: Braeburn
SKU: 129004
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![EWC Controls 4 SID 4 Inch Slip In Retrofit Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/sid1_5ee89470-427f-4c28-bae0-c567eabe4fe9_medium.gif?v=1713902470)
4 SID | 4 Inch Slip In Retrofit Damper | EWC Controls
Brand: EWC Controls
SKU: 4 SID
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![EWC Controls 4 SID-15S 4 SID SLIP IN MA-15S DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/sid1_e12d4d51-be5d-4530-87d2-72b7a27dcaa0_medium.gif?v=1712073083)
4 SID-15S | 4 SID SLIP IN MA-15S DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 4 SID-15S
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![EWC Controls 4 URD-SRE120 NC 4 URD-SRE120 120V ROUND SPRING RETURN DAMPER – NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/urd-sr120small-proof_78929b1a-253a-45d6-bad2-d74a7b0637e8_medium.gif?v=1709054610)
4 URD-SRE120 NC | 4 URD-SRE120 120V ROUND SPRING RETURN DAMPER – NORMALLY CLOSED | EWC Controls
Brand: EWC Controls
SKU: 4 URD-SRE120 NC
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![EWC Controls 4 URD-SRE120 NO 4 URD-SRE120 120V ROUND SPRING RETURN DAMPER – NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/urd-sr120small-proof_609ba272-f5a4-4093-9569-133e4f5e6714_medium.gif?v=1709054572)
4 URD-SRE120 NO | 4 URD-SRE120 120V ROUND SPRING RETURN DAMPER – NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 4 URD-SRE120 NO
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![iO HVAC Controls RM-04 Rheem 4" Round Zone Damper, 35 second Belimo actuator | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/RheemRound_f130492c-6c98-4983-8d47-463eedccc802_medium.jpg?v=1708912734)
RM-04 | Rheem 4" Round Zone Damper, 35 second Belimo actuator | iO HVAC Controls
Brand: iO HVAC Controls
SKU: RM-04
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![iO HVAC Controls TD-04 Trane 4" Round Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-TDXX_a57c31bd-d487-432a-9d98-da63b1ea81d1_medium.jpg?v=1708912781)
TD-04 | Trane 4" Round Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: TD-04
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![iO HVAC Controls D-04-PO Round 4" Fresh Air Damper, 24V, PO/SC | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-DXX_ec942d5b-41db-4cd6-aae0-3a18b71cd765_medium.jpg?v=1715804874)
D-04-PO | Round 4" Fresh Air Damper, 24V, PO / SC | iO HVAC Controls
Brand: iO HVAC Controls
SKU: D-04-PO
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![iO HVAC Controls D-04 Round 4" Zone Damper, 2 Wire, 24V, PC/SO | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/iO-DXX_14de849f-a8cb-4f90-83cf-7a34c9849b00_medium.jpg?v=1715804864)
D-04 | Round 4" Zone Damper, 2 Wire, 24V, PC / SO | iO HVAC Controls
Brand: iO HVAC Controls
SKU: D-04
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![iO HVAC Controls CD-04 Carrier 4" Round Zone Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/iO-CDXX_18500c4f-d7dc-46b8-8ec1-e9a827d878cd_medium.jpg?v=1708912347)
CD-04 | Carrier 4" Round Zone Damper | iO HVAC Controls
Brand: iO HVAC Controls
SKU: CD-04
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![Braeburn 128004 Retrofit Damper | 4" Round Retrofit Motorized Damper | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/Retrofit-Round-WEB_0_9a684b7f-c412-4f7c-9707-dc2d932b0097_medium.jpg?v=1708892741)
128004 | Retrofit Damper | 4" Round Retrofit Motorized Damper | Braeburn
Brand: Braeburn
SKU: 128004
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![Braeburn 119004 Round Damper | 4" Round Motorized Damper Spring Return - Normally Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/PC_SR-Round_e9f95961-e3f8-41ad-ae2b-47747e4c5bff_medium.jpg?v=1708892727)
119004 | Round Damper | 4" Round Motorized Damper Spring Return - Normally Open | Braeburn
Brand: Braeburn
SKU: 119004
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![EWC Controls 4 URD-SRE120 N.C. 4 Inch 120V Round Motorized Spring Return Damper Normally Closed | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sr120small-proof_d13e9463-bd37-43ac-8970-60221ea9cf75_medium.gif?v=1713902452)
4 URD-SRE120 N.C. | 4 Inch 120V Round Motorized Spring Return Damper Normally Closed | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 4 URD-SRE120 N.C.
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![EWC Controls 4 URD-SRE120 N.O. 4 Inch 120V Round Motorized Spring Return Damper Normally Open | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/urd-sr120small-proof_0d9819ba-fb66-48ba-a63a-cedb944b9578_medium.gif?v=1713902480)
4 URD-SRE120 N.O. | 4 Inch 120V Round Motorized Spring Return Damper Normally Open | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 4 URD-SRE120 N.O.
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