A Popular daylighting system for interior or exterior glass walls, channel glassï¼also called as U-profile glass or uglassï¼ â provides a sleek, modern look for commercial or industrial buildings and homes. The glass is available in a variety of specifications , allowing for the passage of natural light without loss of privacy. This very versatile product can be installed vertically or horizontally and is available in lengths up to 23 feet, with filming options available to meet impact safety requirements.