This is not the envelopes that I was looking for but it was the only one available. I wanted a security envelope same size that i purchased but i did not want the straight across seal.
I use these because it’s hard to see a shadow of what is inside the envelope and the paper is #24 which is rigid enough that it holds shape while in transit. Lighter weight paper could fold and shred in transit.
I have been purchasing these at regular intervals and used to like them. They do need to be pressed extra hard to make them seal but they will stick. However they have changed the product. The color used to closely match 92 94 etc white paper. The envelops are now much more blue/gray. They no longer match white standard paper. My last order in August of '21 was the white envelopes. My last order in Nov '21 came as the blue/gray. I also tried the 394047N Staples envelopes. They are the exact same blue/gray as these 5037 envelopes. Don't use either of these if you are looking for envelops that closely match standard paper stock.