Fire rated door hinge can be called 2/4 ball bearing hinge, it is one kind of our door hinges. As a professional commercial hinge, the fire rated door hinges we provide are various, such as heavy duty hinges, butt hinge, full mortise hinge, UL door hinge, CE hinge etc. The fire resistant hinges for sale are suitable for fire rated door, wood door, steel door, double door, single door, steel door of commercial or residential application. The material can be stainless steel 316,SS304,SS202,SS201 etc. For heavier doors, exterior doors and doors prone to damp such as kitchens and bathrooms, we recommend using solid stainless steel 316 hinges. Any of our fire resistant door hinges can meet the exact requirements for the fire door rating. Any questions you can always contact us!