Professional Builder reviews Herschel Select XL Professional Builder magazine outlines how easy it is to install our Herschel Select XL panel, seen here being mounted in an attic games room. Related posts:There’s no such thing as the sun setting with Herschel!What's so smart about Herschel iQ?Smart, connected heating from Herschel Posted on 18th July 201620th July 2020 by Sam Abel