Photo 1 of 12" x 4" Inch (Outer Dimensions) White Air Vent Cover - Steel Return Air Grilles - for Ceiling and Sidewall - HVAC - with Insect Protection Screen (11.81 x 3.93 inch, White)

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Photo 1 of 12" x 4" Inch (Outer Dimensions) White Air Vent Cover - Steel Return Air Grilles - for Ceiling and Sidewall - HVAC - with Insect Protection Screen (11.81 x 3.93 inch, White) Photo 2 of 12" x 4" Inch (Outer Dimensions) White Air Vent Cover - Steel Return Air Grilles - for Ceiling and Sidewall - HVAC - with Insect Protection Screen (11.81 x 3.93 inch, White)