The Country's Largest Supply of Continuous Hinges Maybe you're searching for a specific continuous hinge. Or you might need to customize a continuous hinge, also referred to as a piano hinge, for your project. At Guden, we can do it all for you. We have the widest assortment of high-quality, competitively-priced continuous hinges in all leaf thicknesses, open widths and lengths. Depending on the material and type of hinge you want, click on one of the categories above. With our complete design facilities and sophisticated CAD system, Guden can quickly design custom piano hinges to meet your specifications. Our customer service representatives are always on hand ready to help you. Just fax, email or call them at 800-3-HINGES. Our Hinge Design Guidelines provides more information about piano hinges and alternate door or lid hinge solutions. And for help specifying hinges, see our Design Forms.