Panelfold's Nuvo designer series offers three contemporary styles of folding doors. Each of the Lucent, Halo, and Visio designs sports optional transluscent or transparent panels. The Halo and Visio doors are available in aluminum, beech, and white, while the Lucent panels come in white only. All panels are 5-1/2 inches wide and a half-inch thick and made of PVC. They're designed for openings up to 8-1/2 feet tall in widths of 8 feet for single doors and 16 feet for joining doors. 305.688.3501. www.panelfold.com.