BioTherm StarFin™ is our high heat output finned pipe commonly used for bench, perimeter, top, and gutter heating. Its tapered six fin design provides maximum heat output while producing a soft, gentle heat. StarFin’s large surface area decreases the amount of pipe needed, reducing shadowing, installation time and labor. Our StarFin Plus delivers the same heat over greater distances. 12-foot sections are joined with O-ring fittings: no tools or welding required. Available in 12′ section pieces.