Redi-seal Insurance Claim Form Envelope, Cheese Blade Flap, Redi-seal Closure, 9 X 12.5, White, 100-boxSince classified insurance documents require a special level of durability and confidentiality, opt for First Class insurance claim envelopes. With First Class insignias on the white wove paper, the forms are sure to arrive in a timely manner. When they do, they'll be tightly secured by the self sealing adhesive until the recipient opens the parcel. He or she can glance at the single poly window to determine the contents. Seam Type: Center; Flap Type: