Quality Park 63577 Quality Park String-Tie Interoffice Envelopes，1-Side Print， 10x13， Blue，100/Ctn[Product Information]- Enter your model numberto make sure this fits.
- Interoffice envelope features a string-tie and button closure.
- Space for up to 31 entries.
- String-tie closure， reusable.
- Heavyweight 28-lb. paper stock.
