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The Bard RFG-3W is an OEM return filter grille assembly sized for a 28 x 14 inch opening and designed to restore proper return airflow and filtration on compatible Bard wall mount equipment. This return grille accepts a standard 14 x 28 x 1 inch field supplied filter, helping protect the indoor coil and blower from dust buildup while keeping the unit breathing correctly for stable performance. Built with an aluminum frame, the RFG-3W is a direct-fit replacement when the original grille is damaged, corroded, or no longer sealing well, and it is commonly listed for use with Bard SH, WA, WE, WG, WL, and WH series units in the 26 through 37 size range.