Ball bearing hinges have always been very popular for their smooth operation, durability, long lasting design & ability to carry heavier loads than washered hinges. Suitable for standard internal residential doors a pair of hinges is adequate; however fitting 3 hinges per door has its advantages. It will look aesthetically pleasing & from a practical viewpoint it helps spread the load evenly & will help to overcome twisting or warping. This can sometimes happen to doors over a period of time where heat & moisture are a factor. Comes with a 10 year mechanical guarantee. Suitable for do...