The BOMMER Screen Door Hinge, item #21, is a set of two high-quality hinges made by Bommer in the United States. Each hinge is 4.5 inches in height and length, and comes with hardware included for easy installation. These hinges do not require batteries and are designed to provide durable and reliable support for commercial doors. Perfect for businesses and industrial settings, this product offers a sturdy solution for ensuring smooth and efficient door operation. BOX 3.