Rustic Horseshoe Cast Iron Door Knocker - Durable and Stylish Entryway Decor Door Knocker is made of durable iron and suitable for both indoor and outdoor use. Spruce up any entryway with this beautifully detailed indoor outdoor accent will become your favorite accessory. Iron door knocker weighs just over 1 pound and measures 6x1x4.5 inches. Made of durable cast iron to create a durable and decorative garden pathway. Suitable for both indoor and outdoor use. Spruce up your entry way with this door knocker, easy to mount and adds a touch of decor to any door you choose. To clean, wipe with a damp cloth as needed. Beautifully detailed and cast from iron, it will be your favorite outdoor accent for years to come.