These envelopes are easy to use and it so much than sealing the old lick the tab envelopes can't remember how many times I cut my tongue while licking the tabs. I have also received paper cuts form the old style envelopes. I do find alot of the plastic seal tapes in the paper recyclying bin and I am not sure if they are recyclable. It looks to me like 400 characters will fit in this box. Is this a correct statement?
The gum should extend fully to the sides of the sealing flap. As it is there are loose pieces of the flap about 1/8" - 1/4" each side which could get ripped or caught. Flap width is about 8-3/4". Gum width needs to be about the same.