Fuliko 13" 3" Grille for Round Spiral Duct Galvanized Steel Register Vent Cover for HVAC Ducting 2 Way Louver Blades Air Duct Ventilation Grill

PRECISE SIZE – Outer dimensions are approximately 13.6" by 4.1"; flange connector measures 12.1" by 2.3" for compatibility. Fits round spiral ducts with diameters from 6.29" to 15.74". Screw hole spacing is 10.16" by 3.35". SCREWS ARE INCLUDED. , Material – Constructed from galvanized steel, this sturdy, corrosion-resistant register grille provides strength and extended durability, ensuring dependable in conditions. LOUVERS FOR AIRFLOW – Vertical and horizontal louvered design enables precise airflow , allowing you to air exactly where required for and temperature distribution. Engineered for efficient air supply, circulation, and exhaust uses. DUCT INSTALLATION – The grille' bezel flange conforms snugly to the vent duct' curvature, creating tight seal that prevents air loss. For optimal , duct vent cover size close to your duct' opening for precise . AIR VENT COVER FOR – Engineered specifically for installation in round ducting / spiral duct vents, this HVAC air duct cover ensures efficient airflow for residential and HVAC . Suitable for AC vents, heater and ventilation ducts, offices, and industrial environments.