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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
round collar only) * 830 OR - factory installed opposed radial damper (sizes 6"-14") * 830 FR - U
Hinged removable extruded aluminum face frame with signature line marks
Heavy gauge cold roll steel
*Note: Ceramic fiber blade insulation is not UL required on dampers with free areas less than 80 square inches
Uniform 360 degree discharge pattern
Spiral Pipe Diffuser with Transition Box SD34-30X12G past 12 months round collar only) * 830SD34 Transition Box Spiral Pipe Grille (DOUBle Deflection) Standard Features Double deflection transition box mount spiral pipe grille Blades are parallel to the shortest dimension Allows for 4 way airflow adjustment Nylon bushings on adj. blades prevent metal on metal rattle Curved saddle with gasket provides airtight fit to spiral pipe Product sizes available to fit spiral pipe diameters 8 48." Spiral pipe diameter must be 4 larger than Height of
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