TimberTech RadianceRail Composite Balusters are one of the choices of infill for the RadianceRail Top and Bottom Rail Pack. Smooth lines. No visible hardware. Both add to the high-end look of RadianceRail composite railing, TimberTech’s most sought-after railing product. RadianceRail composite railing colors match or complement all our planks. Homeowners can mix and match differing post and rail colors, curve the rail and add a deck lighting system for a truly upscale look that reflects their unique styles.