HOW IT WORKS: Enter your personal code to open the box. Inside the box, a wire drilled through the door lifts the latch on the other side allowing door to open. When inside, simply lift the latch, no need to enter code.DOES IT FIT MY GATE: Gate Lock can be installed on wood or vinyl gates! Works for gates that swing into or out of yard. See detailed instructions in the installation guide.DIMENSIONS AND PARTS: Our regular gate lock is 2 ½” (w) x 3 ½” (h) with standard sized dials, a black lock box cover, die-cast box, latch, and hardware. US Patent: 9,528,306, Canada Patent: 2856757.SAFE AND SECURE: Reliable- No keys, batteries or electronics needed. Can’t be reached from over the fence, thanks to the strong latch cover. Durable, Waterproof, and will not rust.EASY TO INSTALL: A tape measure, electric drill, Phillips bit and a wood drill bit are needed. Gate Lock comes with all required hardware. Check out our easy-to-follow installation videos and guide.