Norsk NSMPRT6BLK Rhino-Tec Multi-Purpose PVC Sport Floor, Black, 6-Pack,Norsk-Stor,NSMPRT6BLK" /> Proprietary PVC co-polymer blend Mallet and utility knife are all that is required to install Patented air flow-through design helps prevent mold and mildew Provides excellent thermal and acoustic insulation Anti-slip and anti-fatigue properties