Deflecto Model 50 Premium Unbreakable Air Deflector Adjustable air deflector is for vents measuring 10" - 14" Redirects hot or cold air from ceiling vents, sidewall vents or floor vents for added comfort Powerful, permanent-strength magnets attach to the vent to provide durable long term use Unbreakable, 100% guaranteed Improve your comfortability energry bill by directing air where you need it most