18x10 Vent Register[Duct Opening],Wall Register Vent Cover for Home Ceiling or Wall,Two-Way Ventilation Register,Adjustable Solid Steel Air Register Cover Feature: ?Crafted from heavy-duty stamped steel with a scratch-resistant white powder-coat finish, this return air grille delivers lasting durability and a clean, modern look.The fixed 40-degree angled fins maximize airflow efficiency while reducing noise, ensuring your HVAC system runs smoothly and quietly. ? Always measure your wall or ceiling duct opening (the hole)—not your old air vent covers!This vent register is designed for a standard 18" x 10" opening.The overall front frame measures19.75" x 11.75" to fully overlap edges for a seamless finish.If your hole measures 18"x10", this is your match! ?Say goodbye to awkward filter changes!The hinged door features a simple latch release—no tools needed.It’s safe, secure, and ideal for both wall and ceiling installations. Specification: Material: Heavy-duty steel construction with matte white powder coating Fin Design: ½” spaced fins fixed at 40 degrees for optimized airflow Design: Fixed hinged door with easy-release latch Mounting: Includes screws for installation;concealed mounting holes Applications: Ideal for sidewall and ceiling return air openings Package Includes: 1 * 18x10 Vent Register 1* Mounting Screws How To Measure Your Air Vent Covers: 1.Measure the drywall or duct opening—this is the “hole” in your wall or ceiling. 2.Do NOT measure your old grille’s overall size. 3.The grille’s front frame is designed to overlap the opening. Example: If your hole is 18" wide x 10" high, order the 18"x10" ceiling vent covers. Note: Please allow 0-1 cm (approx. 0-0.4") variance due to manual measurement.Confirm your opening size before purchasing to ensure the perfect fit.