This Door Lock rests on top of the door so tots can’t reach it. A peg mounts on the door frame and the latch slides around the peg to lock and release! Opens from either side of the door. Optional Easy-grip wand for shorter adults. Fits all standard interior doors measuring up to 1 3/8″ thick. Not for use with exterior or oversized doors. Product Highlights and Improvements 1) Stronger material construction-twice the strength of the previous model. 2) Better peg design for more professional installation. 3) Easy grip Wand enables shorter adult to operate. 4) Large, easy grasp finger hold for easier use. 5) Improved, latch opening for a more secure lock. Wands sold seperately. Don’t pay for parts you don’t always need and end up throwing away.