Photo 1 of Vent Systems 8'' x 4'' Inch (Overall Dimensions) Pack of 2 White Air Vent Duct Cover Metal Return Grill with Built in Pest Guard Screen HVAC Grille for Home Improvement 6x2 (Opening Dimensions)

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Photo 1 of Vent Systems 8'' x 4'' Inch (Overall Dimensions) Pack of 2 White Air Vent Duct Cover Metal Return Grill with Built in Pest Guard Screen HVAC Grille for Home Improvement 6x2 (Opening Dimensions)Photo 2 of Vent Systems 8'' x 4'' Inch (Overall Dimensions) Pack of 2 White Air Vent Duct Cover Metal Return Grill with Built in Pest Guard Screen HVAC Grille for Home Improvement 6x2 (Opening Dimensions)