National Hardware National N185-199 V521 3-1/2 Inch Commercial Brass Adjustable Full Mortise Spring Hinge, 3-1/2"

• Manufactured with cold-rolled steel
• Closing speed and tension is adjustable
• Fits standard hinge cutout
• Hinge is UL approved for fire doors
• 1/4 inch radius round corners

Whether for home, farm, builder or industrial customers, National has all the right hardware in the sizes and finishes you need. With over a century of service National is committed to maintaining the highest level of product quality, innovation and manufacturing technology. Providing quality hinges for all of your industrial, residential, commercial and specialty needs. With a wide array of finishes and corner options, there's a residential hinge application ideally suited to fit your interior project needs.