ALDER-DOORS.com is a leading online retailer of interior 1-3/8″ thick Knotty Alder doors. Here you’ll find the absolute highest quality doors, priced at the best value.

Our products are 100% manufactured in the U.S. at our state-of-the-art factory in northern Colorado. We sell direct to the trade or homeowner, offer pre-hung and factory pre-finished options, and ship directly to your home or construction site. We invite you to explore our company, our product line, and our quality. Call us toll-free at 888.786.6861, chat with one of our online sales specialists, or place your order online. Thank you for visiting!