Dampers 12 x 28 Size (in)
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![EWC Controls 12X28 ND-RSD NC Rectangular Damper | 12X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_2f1fcf01-e7a3-48d6-a6c2-1e766957fc55_medium.png?v=1720000402)
12X28 ND-RSD NC | Rectangular Damper | 12X28 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY CLOSED | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 12X28 ND-RSD NC
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![EWC Controls 12X28 ND Rectangular Damper | 12X28 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_b2cdba41-b3f4-4dcb-86cd-fa803df8d00f_medium.png?v=1720000398)
12X28 ND | Rectangular Damper | 12X28 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 12X28 ND
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![EWC Controls 12X28 ND-15S 12X28 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN/POWER CLOSE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_c19843ff-3dcc-47ec-a6b9-905eded11eb2_medium.png?v=1720000371)
12X28 ND-15S | 12X28 ND-15S MOTORIZED DAMPER 15 SECOND POWER OPEN / POWER CLOSE | EWC Controls
Brand: EWC Controls
SKU: 12X28 ND-15S
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547-323A | RCM FM BAC +/-.25"wc(62.5Pa)0.5%FS | Siemens
Brand: Siemens
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