I checked online, and there are plenty of toploaders described as PVC free, but nothing on semi-rigids. Ultra Pro advertises on the toploaders themselves that they are PVC and acid free, along with most of their other products but NOT the semi-rigids. The fact that it is omitted that worries me.
Can anyone find a source that describes semi-rigids (regardless of company) that are PVC/vinyl/acid free?
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