Stainless Steel Ball Bearing Door Hinge (Internal Use Only) SKU: HB4 Stainless Steel Ball Bearing Door Hinge (Fire Rated) Pinit Quantity discounts available QuantityPrice Quantity -+ Add to Basket DescriptionQuality ball bearing butt hinge.Conforms to BS EN 1935: 2002 Grade 13.Certifire approved.For internal door use only.Note: if you are using these hinges on a fire door you will also need to add intumescent pads behind the hinges.HB4 manufactured from 304 stainless steel.HB4R manufactured rom 201 stainless steel.Not recommended for external use or with acidic timber (HQ4 should be used in these applications).SpecificationsFixings:Screws SuppliedDocumentationHB4 Technical DWG Drawing: DownloadHB4 Technical PDF Drawing: DownloadHB4R Technical DWG Drawing: DownloadHB4R Technical PDF Drawing: DownloadHB4 Data Card: DownloadHB4R Data Card: Download