Fire Rated 7

When choosing a ball bearing hinge, here are some key specifications to consider:

Size: Ensure the hinge is the right size for your door. Common sizes include 3" x 3", 4" x 4", and 4.5" x 4.5". The size affects the load-bearing capacity and the fit within the door frame.
Thickness: The thickness of the hinge (e.g., standard, heavy-duty) should match the weight and usage of the door. Heavy-duty hinges are suited for high-traffic or heavy doors.
Finish: Choose a finish that complements your door and interior design. Popular finishes include stainless steel, brass, bronze, and nickel.
Material: Consider the material of the hinge for durability and corrosion resistance. Stainless steel and brass are commonly used for their strength and resistance to rust.
Fire Rating: If the door requires a fire rating (e.g., in commercial or public buildings), ensure the hinge meets the necessary fire safety standards.
Security Features: Some hinges come with additional security features such as non-removable pins or ball bearings for added security and smooth operation.
Knuckle: The knuckle diameter can vary, affecting the overall appearance and performance of the hinge.
Usage: Determine if the hinge is for interior or exterior use, as exterior hinges need to withstand weather conditions.

75mm/3" Black Ball Bearing Hinges(1 pair)