Fab & Fix's 65mm Heritage External Round Door Knob comes in a choice of classic finishes to complement homes with a more traditional aesthetic. It is sized to fit most external door types and suitable for PVCu, composite, aluminium, and timber exterior doors.This decorative door knob is supplied in both bracket face fix and bolt fix specifications, with parts, tools and fixings supplied within one package for a highly secure, quick and easy installation.Features & Benefits: Fab & Fix Heritage Forged Black External Round Door Knob, Comes in a choice of classic finishes to complement homes with a more traditional aesthetic, Sized to fit most external door types, Suitable for PVCu, composite, aluminium, and timber exterior doors, Supplied in both bracket face fix and bolt fix specifications, Quick and easy installation, Made from high-quality zinc and comes with a 10-year mechanical guaranteeDesigned to meet the life-cycle of the door and made from high-quality zinc, the Fab & Fix Heritage External Round Door Knob comes with a 10-year mechanical guarantee.Maintenance, It is recommended that you routinely clean your external door hardware products to maintain their quality finish and high-end appearance. Moving parts within the mechanism should also be lightly lubricated at least twice a year, particularly if installed in properties within 25 miles of coastal or large industrial areas. More regular cleaning and aftercare may be required in such locations due to the build-up of corrosive contaminants.Standards & Certification, British/European Standard: BS EN 1670: 2007 Grade 5 Corrosion Resistance (480 hours). Fab & Fix Heritage Forged Black External Round Door Knob ERA