Zoo Hardware 3 Inch Grade 201 Slim Knuckle Bearing Hinge - Bronze - ZHSS352PVD

The hinge is made of Grade 201 Stainless Steel with a PVD Stainless Brass finish.

The dimensions are 76mm (Length) x 52mm (Width) x 1.5mm (Thickness), which corresponds to a standard 3-inch hinge.

Yes, the hinges are supplied in pairs with matching screws for installation.

While made of stainless steel, the Grade 201 is best suited for interior applications. For harsh exterior environments, higher grades of stainless steel or specialized exterior hinges are recommended.

Clean with a soft, damp cloth. Mild soap and water can be used for tougher spots, followed by thorough drying. Avoid abrasive cleaners.

It refers to a hinge design where the knuckles (the parts that overlap when the door is closed) are slim and house a bearing mechanism. This reduces friction for smoother operation and a more streamlined appearance.

For standard interior doors, this hinge is suitable. For heavier doors, consider using three hinges or hinges specifically rated for heavier loads.

Check that all hinge screws are fully tightened. Ensure the door and frame mortises are correctly sized and aligned. If the issue persists, a third hinge may be required for heavier doors.

The bearing mechanism should prevent squeaking. If a squeak develops, ensure the hinge pin is fully seated. A very small amount of white lithium grease can be applied to the pin if necessary, but avoid over-lubrication.

Avoid contact with harsh chemicals or abrasive materials. Clean only with a soft cloth and mild soap. Ensure the environment is not excessively corrosive (e.g., near strong chemicals or salt spray).