UniClic ® is the leading clic technology. NO special tools or special skills are needed. 3 installation options include: Floating (no glue or nails required), glue-down and nail-down. Only vacuuming or damp mopping is needed. The UniClic system is precision milled for extremely tight plank-to-plank connections. NO play or open joints means NO risk of accumulating dirt between boards. NO risk of damaging boards due to raised ends. UniClic board connectionss resist a tensile force in excess of 450 kg/linear meter (300 lbs/linear ft). Acacia has a rating of 1,750 on the Janka scale of species hardness, meaning it is exceptionally hard, stable and ideal for flooring throughout your entire home. Our Imperial Walnut stain truly enhances the vibrant texture and grain pattern of this species. The color ranges from light blond to deep brown and convey a rich, yet light feel to the floor. Trillium floors are E1 Certified and have the Deco-Logical seal for reduced resource consumption.