Save energy and improve comfort year-round with this easy-to-attach air deflector. Adjustable Frost King® design attaches magnetically to a baseboard register to help improve heating efficiency in winter by directing warm air down to heat a room from the floor up, and help you cool off in summer by directing cold air upward where you can feel it. Heavy-duty clear plastic vent deflector design blends in with any décor and extends from 15"–25"L to fit any baseboard in your home. Thanks to built-in magnets, this baseboard air deflector installs in seconds—no tools required! 3 3/4"W x 4 1/2"H air vent deflector. Durable plastic. Wipe clean.