PTVP Inst'l 30/150 30gsm Brown refers to a specific type of paper product designed for institutional use. "PTVP" likely denotes a product series or manufacturer. The "30/150" could indicate a ream count (e.g., 30 reams per carton of 150 sheets per ream, or perhaps roll length/width in some unit if it's a roll). "30gsm" specifies the paper's basis weight as 30 grams per square meter, indicating it's a relatively lightweight paper.