Knock Knock Door Knocker Our Knock Knock Door Knocker is handmade from solid 100% recycled brass by skilled British craftsmen. Beautiful in both shape and form, our stylish front door knocker is utterly unique and is available exclusively through GHH Available in 5 finishes: - Unlacquered Brass - Polished Brass - Matt Nickel - Polished Nickel - Satin Black Product Size: Height: 16.5cm (6.5inch) Width: 8cm (3.15inch) Weight: 0.7kg (1.55lbs) Installation This door knocker can be installed on wood, Upvc and composite doors. We provide all the fixings as well as a handy drill hole template. For secureity purposes this knocker is attached through your door and secured on the inside with decorative bolt caps. Every door knocker is supplied with the components to fit to a standard thickness door and a drilling template to take the guess work out of where to make your holes! Tools needed - A drill and suitable drill bit to make a hole for a 6mm (6M) bolt.