Model# ALP-M-00176-00001. Alpen ZR-6 Series, Balanced-6 TGT configuration. Overall dimensions: 106.5"W x 72.5"H. Fiberglass frame fixed (non-operable) 3-panel picture window. Features dual-chamber insulated glass units with Low-E coating, argon gas fill, and thin glass technology for superior thermal performance — ideal for Denver's high-altitude, variable climate. Fiberglass frames offer excellent durability and dimensional stability versus wood or vinyl. Like-new condition in original packaging with no damage reported. Professional installation recommended for a unit of this size.