National Hardware 3″ Non-Mortise Panel Hinge (2 Count) is a high-quality hinge designed specifically for bi-fold doors that are at least 1 inch thick. This 3-inch non-mortise hinge features a non-removable tight, non-rising pin, ensuring durability and secure operation. Its surface mount design means that no mortising is required, making installation quick and easy. Ideal for enhancing the functionality and appearance of your doors, this hinge combines strength and convenience in one reliable product.Model Number: N146-951