The Andersen 200 & 400 Series Gliding Patio Door 2-Panel Lock Assembly 9186071 is a high-quality door lock designed specifically for patio doors. With a sleek silver color, this lock assembly is suitable for Andersen patio doors. It includes one panel lock for secure entry and exit. Made by the reputable brand Andersen, this door lock ensures durability and reliability for your home's security.