Zoro is proud to include hundreds of styles of business envelopes among its vast inventory of basic office supplies. With a variety of standard envelope sizes as well as non-standard envelope sizes, we feel we’ve got this category pretty well sealed. If you’re mailing sensitive or confidential materials, security envelopes have patterned interiors to prevent others from seeing what’s inside. If you’re sending out invoices, use window envelopes to save time when addressing, or Lightweight Tyvek® envelopes save postage when shipping large amounts of material. Count on us for your manila envelopes, shipping envelopes, window envelopes and padded envelopes (AKA “puffelopes”) too!