Hollow Metal Doors & Frames, Architectural Hardware
Hinges: Spring

These standard concealed bearing hinges contain an internal spring that can be tensioned. They are ideal for low weight doors in low traffic areas where the installation of an overhead door closer is not feasible or desirable. The size of the door governs the number of spring hinges required. For a 3 x 7 door, we recommend two spring hinges.  However the application required, not the cost, is the factor here because a variety of closers are available that cost less than two spring hinges.

Thank you for your quick reply yesterday! Congratulations on your move to a newer facility, hope everything is going well!