JBF National continuous hinges offer a versatility found in few other industrial products. Due to their ability of being easily sized to any length, our continuous hinges (also known as piano hinges) are an economical option for any project. This model comes manufactured from the highest quality electro black plated steel. JBF National stocks all standard gauges and sizes, and we also offer highly customized hinge products to meet your needs. Pierced and countersunk holes 2"OC, #5. Contact one of our sales engineers today to find out more.