The release liner did a great job of protecting the acrylic surface when I cut it out with a band saw and then filed the edges with a medium file. It wasn't fast, but the material withstood significant abuse from my end without tearing, and the protective coating saved both me and the manufacturer from scratching the surface. Yes, even the manufacturer made a scratch on the protective layer, but it didn't reach the surface. Only two large floor panes had to be replaced on the door.
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