WESTERN STATES Open End First Class Tyvek Catalog Envelopes 9 x 12 14# Green Diamond Border Box of 500

Open-End Tyvek Catalog Envelopes

These open-end catalog envelopes are made from 14-lb spun-bonded olefin, giving a bright white surface that resists moisture and tearing. The smooth finish accepts ink cleanly, and the centre-seam construction keeps the flap flat for reliable feeding through office equipment. A green diamond border and printed "First Class Mail" text on both face and flap identify the service class at a glance. Each box contains 500 envelopes sized 9 x 12 inches.

Practical limits of Tyvek mailers

Tyvek material is lighter and tougher than standard paper, so it reduces postage weight while surviving rough handling in automated sorting. The open-end format suits catalogues, booklets and multiple sheets that slide in from the short side. Kwik-Tak adhesive activates with light pressure and holds without moistening, yet the seal can be reopened cleanly if contents must be inspected. Moisture resistance protects documents in damp conditions, but the envelopes are not padded and do not cushion fragile items.

Upgrading from paper catalog envelopes

Switching from regular paper catalog envelopes cuts weight and eliminates torn flaps or burst seams on heavy inserts. The moisture barrier prevents ink smear and content damage when mail travels through wet weather. The pre-printed border removes the need for separate service-class stamps or labels, saving time on high-volume runs. The jump is worth it when you ship 500 or more pieces a year and want lower damage rates without buying padded mailers.