Solid Brass Vintage Door Knocker Garden Trowel 7"H | Renovator's Supply Door Knockers that make a great first impression. Pick out your Door Knockers here today. Brass Door Knocker. Step-up your curb appeal and make your entrance a knockout! 7 H x 1 5/8 W. Tarnish resistant lacquer keeps its shine Low - maintenance hardware 100% HEAVY cast brass