FEATURES: Ball bearing hinges have always been very popular for their smooth operation, durability, long lasting design and ability to carry heavier loads than standard hinges. Suitable for standard internal residential doors, a pair of hinges is adequate FIRE RATED: To help prevent the spread of fire by ensuring doors remain closed in the event of a fire, these hinges have been approved in accordance with the BS EN 1935 standards, making it suitable fire and smoke door assemblies. SIZE & COLOUR: 4 Inch 100mm (refer to image for full set of details), Polished Chrome finish PACKAGE CONTENTS: 2 Pairs of ball bearing hinges, fixtures and fittings all finished EASY INSTALLATION: You just measure the right position, dig the hinge slot, than mounting the screws and finish, easy installation for home repair by yourself. This a reversible design door hinge that you can install to a left hand door or right hand door., Manufacturer: Shun Yingtong