Used as a water bar on a concrete floor behind some roller shutter doors. Screwed and sealed down, doing the job superbly, routed a 45° on two sides so vehicle tyres don't "grab" the batten as they pass over, works really well and a neat rot proof solution to a wet problem. Ordered 500% more than I need so just need to find more problems to fix with what I have left! Great service, efficient delivery by Tuda.