6 x 9" Flat Ship-Lite(R) Envelopes. Ship-Lite(R) envelopes are six times stronger than paper envelopes. Made from white paper reinforced with mesh screen poly fibers. Envelopes are moisture resistant. Feature self-seal closure.
6 x 9" Flat Ship-Lite(R) Envelopes. Ship-Lite(R) envelopes are six times stronger than paper envelopes. Made from white paper reinforced with mesh screen poly fibers. Envelopes are moisture resistant. Feature self-seal closure.