Searching for Paper, 13-x-19 with Silk appearance found in the White Color Group, 270 GSM (100lb Cover) --learn more about White --Explorer Paper. Also, jump to our popular help pages for paper help. (To make a successful paper selection, it is important to have a brief understanding of text weight and cover weight papers.) AND envelope help (It is important to remember that inserts must always be smaller than the envelope dimensions.)