Waterson hinges – made of 304/316 stainless steel, suitable for interior/exterior doors, durable with investment casting technology, ideal for high-frequency uses.
How Many Spring Hinges for a Fire Door Per NFPA 80 Requirements
"We have a large project and need 52 hinges total. Should I go with 3 or 4 hinges per door?" Well, the answer depends on [...]






