Paul Graham on Twitter: "Many thanks to the people who've warned me that old gas mask filters can contain asbestos and other nasty things. This one is a GP5, whose filters do,
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![All I have ever seen on the GP5 is the short filters. Are the longer ones from newer models, or is it just what came with the one I bought at a All I have ever seen on the GP5 is the short filters. Are the longer ones from newer models, or is it just what came with the one I bought at a](https://preview.redd.it/4o1cep2hnah21.jpg?width=640&crop=smart&auto=webp&s=db2563406cdfec05f27b4ff2d28579253ebd9d28)