12 x 15 1/2" Flat Ship-Lite Envelopes. Ship-Lite 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.
12 x 15 1/2" Flat Ship-Lite Envelopes. Ship-Lite 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.