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The BSC PREFERRED TYF1520WS is a case of 100 Tyvek self-seal envelopes built for demanding shipping and mailing applications. Constructed from 14 lb. olefin material, these envelopes deliver puncture, tear, and moisture resistance that significantly outperforms standard paper envelopes. The self-seal closure eliminates the need for separate adhesive or moistening, speeding up high-volume mailing workflows. Facilities managers, shipping departments, and supply room staff handling outgoing correspondence or parts documentation will find these envelopes well suited to daily operational use.
These Tyvek envelopes are used in industrial, commercial, and office environments where durable, protective mailing is required. Their construction makes them appropriate for shipping documents, invoices, parts lists, and other materials that need protection from handling damage or moisture exposure during transit. Available in plain and First Class printed border styles, they fit a range of outgoing mail needs. Each case contains 100 envelopes, making them practical for stocking in mail rooms or supply areas with regular mailing volume.
Designed as a direct replacement for part number S-11492. Suitable for standard commercial and industrial mailing applications requiring durable, moisture-resistant envelopes.
No tools or trade licensing required for use. Store cases flat in a dry environment away from direct sunlight to preserve the self-seal adhesive. Activate the self-seal closure by pressing the flap firmly against the envelope body after removing the adhesive liner. Do not expose sealed envelopes to excessive heat prior to mailing, as this may affect adhesive performance.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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