More About Steel Baseboard Registers, Multi-Shutter Valve (664 Series)
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The 664 Series Steel Baseboard Registers with a Multi-Shutter Valve Damper by Hart & Cooley provide all-steel construction, 1/3" spaced fins set at 20 degrees, 7/8” margin turnback, 1-5/8” depth when fully opened, exceptional free area, and come in a bright white enamel finish. They are ideal for shallow duct installations.