As a New York Metropolitan based manufacturer, Custom Door and Mirror is a natural choice as a partner for companies all over the country. In 1957, The Paniflex Door Corporation started out as a small family run business. Our skill was crafted through the experience of 36 years of learning how to make the industry’s best bifold and sliding doors. Today the Paniflex Corporation is known as Custom Door & Mirror and manufactures the highest quality doors in the widest range of sizes.