Using your Deltana Adjustable HD Pocket Privacy Lock is a breeze. First, measure your door thickness. It should be between 1 - 3/8' and 1 - 3/4'. Thanks to its adjustable design, you can customize the lock during installation to fit your door perfectly. Just follow the included instructions for a smooth setup. When using the lock, simply engage it to secure your privacy. For maintenance, clean the lock regularly with a soft, dry cloth. Avoid using abrasive cleaners as they can damage the finish. If you notice any issues with the lock's functionality, check for any debris or blockages in the mechanism. Deltana stands for quality, so with proper care, this lock will serve you well for a long time.