Aluminum 3-Way Vent Cover: Adjustable Curved Blade Air Supply Diffuser- 10 x 4-Plastic Seal for Tight Fit, Quiet Flow, Multi-Shutter Damper-[Front Grille Size:11.6"x5.6"][Duct Hole Size:10"x4"]

MEASURE DUCT HOLE FIRST: Ensure a great fit with our 10"x4" duct opening, our 10x4 vent cover, designed to fit ceiling openings and walls. The visible face measures 11.6" x 5.6" for a smooth, professional finish after installation. EFFORTLESS INSTALLATION FOR ANY CEILING: This versatile 10x4 register installs easily on ceilings, wall, and drop ceiling panels. It’s an excellent HVAC register vent solution for both home and commercial spaces, offering efficient air flow. INCLUDES DURABLE SCREWS FOR EASY SETUP: Comes with a set of galvanized steel screws (5/32" diameter x 1 1/2" length, white head), designed for use with wood and drywall. Ideal for installation as heater vent covers, ceiling register or HVAC wall register covers. INDOOR USE ONLY – NOT FOR EXTERIOR OR FLOOR: Designed specifically for indoor ceiling applications, this 10x4 vent cover is not suitable for outdoor use or installation on floors. It’s great for ceiling vents or wall register in homes or offices. ENHANCED EFFICIENCY WITH RUBBER GASKET: A rubber gasket lines the perimeter of the AC vents, effectively sealing the edges and preventing air leaks. This improves HVAC vent efficiency, ensuring your system works at its full potential.