Help to keep your curious crawler from accessing an off-limit side by side cabinet with a Double Door Cabinet Lock. It installs easily to the handles or knobs of the cabinet and helps keep your child away from the contents inside. In side by side comparisons with leading competitors using real life toddlers, the Safety 1st Cabinet Slide Locks were strong enough to keep even the cleverest of toddlers out. Even in lab testing using state of the art mechanical pull force equipment, Safety 1st outperformed the competition. Toddler Tested. Proven Stronger.