View 2 of [36 x 12 Duct Hole] Vent Cover. Aluminum Return Grille HVAC Ceiling or Sidewall Grille Without Damper -Easy Air Flow - Gable Vents. Designed for Extraction of air. [37.6 x 13.6" Face] 36x12 Inch

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View 1 of [36 x 12 Duct Hole] Vent Cover. Aluminum Return Grille HVAC Ceiling or Sidewall Grille Without Damper -Easy Air Flow - Gable Vents. Designed for Extraction of air. [37.6 x 13.6" Face] 36x12 InchView 2 of [36 x 12 Duct Hole] Vent Cover. Aluminum Return Grille HVAC Ceiling or Sidewall Grille Without Damper -Easy Air Flow - Gable Vents. Designed for Extraction of air. [37.6 x 13.6" Face] 36x12 InchView 3 of [36 x 12 Duct Hole] Vent Cover. Aluminum Return Grille HVAC Ceiling or Sidewall Grille Without Damper -Easy Air Flow - Gable Vents. Designed for Extraction of air. [37.6 x 13.6" Face] 36x12 Inch