Stayflats® Lite Mailers. 11-3/8 X 8-1/2" (inside).
.018" thick white paperboard.
Peel & Seal tape closure; Tear-strip opener.

Stayflats® Lite Mailer
11-3/8 X 8-1/2" (inside)
Made from white (outside) 18 point 100% recycled paperboard with a minum of 35% recycled post-consumer content. They have a peel & seal tape closure and tear strip opening. These lightweight mailers ship within USPS “Flat” or “Letter” mail piece dimensions and are side-loading for easy product insertion. Recycling symbol 21 means that it is curbside recyclable.
Use corrugated filler F119 if additional rigidity is needed.