What is the difference between a pitched VELUX Sun Tunnel® and a low profile VELUX Sun Tunnel®?

A pitched VELUX Sun Tunnel® is best for north-facing roofs. It provides consistent light distribution throughout the day and provides a straighter tunnel run through many different roof pitches. A low-profile VELUX Sun Tunnel® is best for south, west, and east-facing roofs. It runs parallel to the roof and is designed to blend with the roofline.