Door hardware is often highly customizable. We have some collections such as AHI Door Levers which come fully assembled and ready for most North American doors, however other collection from Formani, d line and Maison Vervloet require multiple components and specific dimensions. We have an overview of door hardware and the ordering process here. For Door Hardware terminology, references and clarifications you can view our order guide here. To place an order email our Sales Team at sales@cassonhware.com or use this form.