These 4 inch ball bearing butt hinges are a strong, smooth-running way to hang an internal or fire door, with a heavyweight action that copes well with solid and fire-rated leaves. They come in nine finishes so you can match them to your handles and the rest of your ironmongery. About these fire-rated hinges Ball bearing hinges carry the weight of the door on bearings set into each knuckle, giving a smoother, longer-lasting action than a plain butt hinge, which matters on the heavier solid and fire doors. They are FD30 rated, so they suit 30 minute fire doors as well as standard internal doors. Made by Atlantic and supplied as a pair with matching screws. Hanging a fire door A fire door must be hung on at least three hinges, not two, so the leaf stays true and the intumescent seals close properly. As these are supplied in pairs, order two packs per fire door so you have the three hinges each one needs. Always fit fire-rated hinges to a fire door, following the door manufacturer's instructions so the door keeps its rating. Key Product Information FD30 fire rated: suitable for 30 minute fire doors and standard internal doors. Ball bearing action: smooth, heavyweight movement that suits solid and fire doors. Nine finishes: matched screws included with every pair. Three hinges per fire door: supplied as a pair, so order two packs per fire door. Made by Atlantic: 10 year mechanical guarantee, subject to Atlantic's terms and conditions.
