Dampers Spring return (no) Spring return
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 28X10 ND-RSD NO Rectangular Damper | 28X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_04643d56-9879-49c6-93d3-d7948f69ca81_medium.png?v=1713902456)
28X10 ND-RSD NO | Rectangular Damper | 28X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 28X10 ND-RSD NO
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![EWC Controls 28X8 ND-RSD NO Rectangular Damper | 28X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_8d0f27ca-e6a3-47f9-b72f-4bd33b36ed2c_medium.png?v=1713902438)
28X8 ND-RSD NO | Rectangular Damper | 28X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 28X8 ND-RSD NO
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![EWC Controls 28X6 ND-RSD NO Rectangular Damper | 28X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_5f3c43db-1087-4b61-a8c1-463a1da4da21_medium.png?v=1713902480)
28X6 ND-RSD NO | Rectangular Damper | 28X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 28X6 ND-RSD NO
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![EWC Controls 26X26 ND-RSD NO Rectangular Damper | 26X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_6d47fdbe-2973-42e8-8c38-a29387f6d64c_medium.png?v=1713902465)
26X26 ND-RSD NO | Rectangular Damper | 26X26 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X26 ND-RSD NO
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![EWC Controls 26X24 ND-RSD NO Rectangular Damper | 26X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_7c4597ca-2c52-4c78-970e-b098761f1b7f_medium.png?v=1713902470)
26X24 ND-RSD NO | Rectangular Damper | 26X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X24 ND-RSD NO
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![EWC Controls 26X22 ND-RSD NO Rectangular Damper | 26X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_f55c2297-3d67-4745-a3c8-c740d086e5da_medium.png?v=1713902433)
26X22 ND-RSD NO | Rectangular Damper | 26X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X22 ND-RSD NO
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![EWC Controls 26X20 ND-RSD NO Rectangular Damper | 26X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_2a27f312-0303-4639-935f-7ba4f1e0a73a_medium.png?v=1713902451)
26X20 ND-RSD NO | Rectangular Damper | 26X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X20 ND-RSD NO
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![EWC Controls 26X18 ND-RSD NO Rectangular Damper | 26X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_6e0c8e0c-4539-411f-b4b3-4f0b98112fd0_medium.png?v=1713902437)
26X18 ND-RSD NO | Rectangular Damper | 26X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X18 ND-RSD NO
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![EWC Controls 26X16 ND-RSD NO Rectangular Damper | 26X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_2fc3a0a4-cd7a-4643-a958-c07f325bbce1_medium.png?v=1713902461)
26X16 ND-RSD NO | Rectangular Damper | 26X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X16 ND-RSD NO
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![EWC Controls 26X14 ND-RSD NO Rectangular Damper | 26X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_bda85cd4-a335-4a5e-8537-90fbf7d63883_medium.png?v=1713902427)
26X14 ND-RSD NO | Rectangular Damper | 26X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X14 ND-RSD NO
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![EWC Controls 26X12 ND-RSD NO Rectangular Damper | 26X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_8263bfd9-305a-4f5f-bbe0-c0d13ba27edd_medium.png?v=1713902423)
26X12 ND-RSD NO | Rectangular Damper | 26X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X12 ND-RSD NO
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![EWC Controls 26X10 ND-RSD NO Rectangular Damper | 26X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_a50da658-d680-432b-85c4-004b5172b405_medium.png?v=1713902466)
26X10 ND-RSD NO | Rectangular Damper | 26X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X10 ND-RSD NO
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![EWC Controls 26X6 ND-RSD NO Rectangular Damper | 26X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_4c8e9277-1523-47b8-8667-c49886b2897c_medium.png?v=1713902476)
26X6 ND-RSD NO | Rectangular Damper | 26X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 26X6 ND-RSD NO
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![EWC Controls 24X24 ND-RSD NO Rectangular Damper | 24X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_0ef4acd9-ea6c-4f09-9650-e332857cbeb7_medium.png?v=1713902437)
24X24 ND-RSD NO | Rectangular Damper | 24X24 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X24 ND-RSD NO
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![EWC Controls 24X20 ND-RSD NO Rectangular Damper | 24X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_f7f1381c-ac64-4e3b-92b4-3d8704a4cddd_medium.png?v=1713902442)
24X20 ND-RSD NO | Rectangular Damper | 24X20 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X20 ND-RSD NO
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![EWC Controls 24X18 ND-RSD NO Rectangular Damper | 24X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_0a1b1773-4aab-4a7f-80ab-5b87123c9df5_medium.png?v=1713902470)
24X18 ND-RSD NO | Rectangular Damper | 24X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X18 ND-RSD NO
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![EWC Controls 24X12 ND-RSD NO Rectangular Damper | 24X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_ac2e4629-ead3-4743-9393-7dd36d9df140_medium.png?v=1713902470)
24X12 ND-RSD NO | Rectangular Damper | 24X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X12 ND-RSD NO
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![EWC Controls 24X10 ND-RSD NO Rectangular Damper | 24X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_dae2e07f-0640-4162-bdf1-34cbc876a698_medium.png?v=1713902539)
24X10 ND-RSD NO | Rectangular Damper | 24X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X10 ND-RSD NO
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![EWC Controls 24X6 ND-RSD NO Rectangular Damper | 24X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_7aa0e40b-ea07-42f4-867e-6b027aae0080_medium.png?v=1713902428)
24X6 ND-RSD NO | Rectangular Damper | 24X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 24X6 ND-RSD NO
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![EWC Controls 22X22 ND-RSD NO Rectangular Damper | 22X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_0ee1eed8-bb5d-4229-ac44-763a29c2932d_medium.png?v=1713902423)
22X22 ND-RSD NO | Rectangular Damper | 22X22 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X22 ND-RSD NO
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![EWC Controls 22X18 ND-RSD NO Rectangular Damper | 22X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_a55881c0-1639-40f5-b72c-e4dfd3e040a2_medium.png?v=1713902404)
22X18 ND-RSD NO | Rectangular Damper | 22X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X18 ND-RSD NO
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![EWC Controls 22X16 ND-RSD NO Rectangular Damper | 22X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_e64a7c66-a895-4d53-a1f0-069ff4d00531_medium.png?v=1713902438)
22X16 ND-RSD NO | Rectangular Damper | 22X16 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X16 ND-RSD NO
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![EWC Controls 22X12 ND-RSD NO Rectangular Damper | 22X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_a63b4fc5-e203-4818-a5e9-bdc92df35544_medium.png?v=1713902465)
22X12 ND-RSD NO | Rectangular Damper | 22X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X12 ND-RSD NO
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![EWC Controls 22X10 ND-RSD NO Rectangular Damper | 22X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c0b088d4-f573-47b5-b0d6-2c924416876c_medium.png?v=1713902423)
22X10 ND-RSD NO | Rectangular Damper | 22X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X10 ND-RSD NO
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