Tyvek® Self Seal Expandable Envelopes, Side Opening, 12"W x 16"L x 4"D, White, 50/Pack

These Tyvek® envelopes provide superior puncture, tear and moisture protection. Features: Constructed from 14 lbs olefin Ten times stronger than paper envelopes Features self-seal closure Available in plain and first class printed borders

These Tyvek® envelopes provide superior puncture, tear and moisture protection. They are constructed from 14 lb. olefin. These envelopes are ten times stronger than paper envelopes. They feature a special seal that once broken, the word "OPENED" appears in red on the flap.

Greeting/invitation cards are ideal for use with computer-generated cards and invitations. Half-fold invitation envelopes hold an 8-1/2" x 11" page folded into half. Redi-Strip closure on included matching envelopes requires no moisture to seal. Peel-away strip keeps adhesive free from dust.

Features: Redi-Seal Envelopes save time on mail preparation No moisture needed to seal! Simply fold down the flap, press and envelope is ready to mail Constructed from durable, 28 lb. paper stock

These mailing tubes attract attention with their bright, glossy appearance. Use to identify or categorize different types of documents or mailings Strong, 3-ply, spiral wound construction Seal with white plastic end caps included The sizes listed are inside usable dimensions Replacement end caps are available for purchase