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The HART COOLEY 850 12 04 brn is a 2-way floor diffuser designed to distribute conditioned air in residential and light commercial HVAC systems. Measuring 4 inches by 12 inches, this floor-mount diffuser deflects airflow in two directions, promoting even air distribution across the occupied space. The brown finish blends with common flooring materials, making it suitable for installations where aesthetics matter alongside function. HVAC technicians and installers use this type of diffuser as the final point of air delivery in forced-air duct systems, connecting directly to floor-mounted duct openings.
This diffuser is intended for floor installation in forced-air heating and cooling systems. The 4-inch by 12-inch opening size fits standard floor boot duct collars of the same dimensions. The brown color option makes it a practical choice for wood, laminate, or similarly toned flooring surfaces. It is commonly installed in residential living spaces, hallways, and light commercial environments where floor supply registers are the specified delivery method.
Designed as an OEM-style replacement or new-installation floor diffuser for standard 4-inch by 12-inch floor duct boot openings in residential and light commercial forced-air HVAC systems.
Installation is typically performed by an HVAC technician or qualified installer. Shut down the HVAC system before removing or installing floor diffusers to prevent debris from entering the duct. Ensure the floor boot collar is clean and free of obstruction before seating the diffuser. Secure the diffuser per local mechanical code requirements to prevent shifting in high-traffic areas.
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