Hi. I’m so happy to find these envelopes in a range of sizes. I’ve been using the “Paper Organizers” (6.5” x 6.5” & 13” x 13”) from CTMH for years...the smaller envelope along with Tonic Studio’s magnetic sheet for the small binder…to store my dies. I also use the same envelope without the magnetic sheet to store 6x6 background stamps. I love the sturdiness of this type of envelope and would like to begin storing my cardstock in the 9” x 11.5”…IF that envelope can hold enough heavyweight paper. Can someone who has this size envelope grab their 110# Cover (Neenah Classic Crest Solar White…y’all know what I mean), stack the 8.5x11 sheets and place them in the envelope, then tell me how many pieces of that particular cardstock will COMFORTABLY fit? I know I can’t cram in as many as I do the 9x12 job tickets holders, but I don’t want to buy a bunch only to find that I can fit only 8-10 sheets of cardstock in each envelope, lol. Thanks so much!