We use these envelopes for Quickbooks invoices and checks. I don't think the checks line up perfectly, but they're good enough for us. We ordered our first box of 500 in Feb. 2019, and I'm coming back in Feb. 2020 to order another box. I suspect that the quality improved somewhere along the line, or we're not stuffing our envelopes as full as some other reviewers, because we haven't had any problems. We generally mail 1 or 2 sheets of paper in each envelope. We've found these to be a great value.
Rating:
[4 of 5 Stars!]