DS EN 477:1996 Unplasticized Polyvinylchloride (Pvc-U) Profiles For The Fabrication Of Windows And Doors - Determination Of The Resistance To Impact Of Main Profiles By Falling Mass Defines a method for the determination of the resistance to impact by a falling mass at -10 degrees C of unplasticized polyvinylchloride (PVC-U) main profiles for the fabrication of windows and doors