These CE marked Frisco Eclipse Grade 7 FD30 Fire Rated Ball Bearing Hinges (76mm x 51mm) in Black Stainless Steel are supplied in packs of 2 and are the ideal hinges for hanging internal residential fire doors that weigh up to 40kg. The satin steel finish of these hinges makes them highly versatile and able to complement any interior. A CE mark means this hinge has reached the health, safety and environmental protection requirements. These hinges have also met the BSEN 1935 standard and the fire-rated 30-minute BSEN 1634 performance. What is an FD30 rating? FD30 Fire Doors and their accessories offer at least 30 minutes of protection against fires when installed correctly to the manufacturer's guidelines. Please note, fire door accessories are a safety product and therefore must be installed using the correct hardware and accessories. Because all fire doors & fire door hardware is manufactured differently, please follow the individual instructions that come with each door. What does Grade 7 mean? A grade 7 ball bearing hinge can hold a maximum of 40kg. This means this hinge can be used with a fire door, and the door will remain fire-resistant if you have installed and maintained the door by fire regulations. The grade 7 hinge is suitable for standard internal residential doors, and a pair of hinges is adequate. Still, it is recommended that three hinges are used as this creates more durability, prevents warping and twisting. What are ball bearing door hinges? Door hinges are crucial pieces of door hardware which are used to both hang and open/close a door. The ball bearing style of door hinge is a durable option which consists of steel ball bearings positioned between the hinge knuckles. Whilst standard hinges can often deteriorate over time resulting in loud squeaky noises, the steel bearings within the ball bearing hinge ensures a much quieter and smoother motion when opening and closing the door. Most internal doors will require two hinges to function properly whereas doors with added security functions will typically require three or more to help prevent forced entry. When installing fire doors, fire rated hinges will need to be used and customers are advised to check that their hinges meet the required fire safety standards. Available in a variety of finishes, there are plenty of choices to suit your needs. Features & Benefits FD30 rated Grade 7 Meets BSEN 1935 & BSEN 1634 CE Marked Pack of 2 Easily adaptable finish Ideal for residential hinges Suitable for doors up to 40kg