Photo 1 of HVAC Premium 40'' x 20'' [Duct Opening] Flat Stamped Steel Return Air Grille - Sidewall and Ceiling - HVAC Vent Duct Cover - White [Outer Dimensions: 41.75''w X 21.75''h]

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Photo 1 of HVAC Premium 40'' x 20'' [Duct Opening] Flat Stamped Steel Return Air Grille - Sidewall and Ceiling - HVAC Vent Duct Cover - White [Outer Dimensions: 41.75''w X 21.75''h]Photo 2 of HVAC Premium 40'' x 20'' [Duct Opening] Flat Stamped Steel Return Air Grille - Sidewall and Ceiling - HVAC Vent Duct Cover - White [Outer Dimensions: 41.75''w X 21.75''h]