Black 5″ Inch Round Ventilation Grille with Insect mesh. Duct 5Ø / Grille 6Ø …. About this item Duct opening size: Ø 5” inch Soffit grille color: Black / Insect mesh: Yes Quick and easy to assemble – DIY / No screws included. perfect for Heating, cooling or air conditioning – HVAC, bathroom and kitchen air exhaust. Heat-resistant from: 5 °F to 160 °F. Y7H