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The AIR FLOW PRODUCTS 52F-1-000000-041200 is a ceiling diffuser box frame designed for use in forced-air HVAC distribution systems. Part of the 52F Series, this box frame provides the structural mounting interface between the ductwork and a ceiling diffuser in a standard 4 x 12 inch opening. It is installed by HVAC technicians during new construction or retrofit work where a finished, secure diffuser mounting is required at the ceiling plane.
This box frame suits residential and light commercial applications where a 4 x 12 inch ceiling diffuser is being installed into a suspended or hard ceiling. It is intended for use with compatible 52F Series diffusers and fits into standard rectangular duct openings of that nominal size. Contractors working on supply air distribution layouts will find this frame appropriate for typical branch-run terminations at interior ceiling locations.
Designed as an OEM-style replacement or new-installation component for ceiling diffuser assemblies requiring a 4 x 12 inch box frame in the 52F Series.
Installation is typically performed by a licensed HVAC technician. Power down the air handling system before beginning any duct or diffuser work. Ensure the rough opening dimensions match the nominal 4 x 12 inch frame size before securing to avoid air bypass leakage. Follow applicable mechanical codes for duct connection and sealing at the diffuser boot interface.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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