Dual Function Door Security Bar Jammer Home Brace Safety Lock Sliding Patio Mace Use for added security, decreasing the chances of intruders entering your home Dual-function door and patio door security bar. 20 gauge steel body withstands more than 350 pounds of force Adjustable from 24.5" to 45". Forty Height Settings, each 1/4 inch apart A Pivoting Ball Joint re-angles the bar to any position for maximum reinforcement Constructed to be a heavy metal reinforcement for both hinged and sliding doors, adding an extra layer of security to standard door locks. The perfect addition to your home security.