4 Pack Transparent Adjustable Air Deflector for Vents, Sidewalls and Ceiling Registers, 8.5" to 15"

Unique two-part expandable design to fit a variety of metal vent covers and registers. Made of high transparency, unbreakable plastic. Redirects airflow for enhanced room comfort and improved system efficiency, helping save energy. Attaches securely to metal duct surfaces with two strong magnets (included). You can also use the screw slots, giving you 2 options for secure mounting. Adjust the deflector to match the vent and position the magnets to hold the unit in place. When installing, press the included magnets to the bottom; they will hold down firmly.

Widely used for floor vents, sidewall registers, and ceiling registers. Suitable for use throughout the home, office, workplace, supermarket, and similar settings