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The Bard RFG-1 is an OEM return air filter grille for Bard wall mount HVAC units, built to provide a clean, secure return opening while holding a standard 17 x 10 x 1 filter behind the grille. This grille is commonly specified on 1 ton applications and helps protect the indoor coil and blower by supporting proper filtration and steady return airflow when the unit is installed without a dedicated return duct. Designed to match Bard fit and mounting requirements, the RFG-1 is a dependable replacement when the original grille is damaged, corroded, or missing, and it restores proper filter access for routine maintenance.