10 x 15 x 2" Kraft Expandable Self-Seal Envelopes 250 PER CASE $183.02 10 x 15 x 2" Kraft Expandable Self-Seal EnvelopesSelf-Seal Envelopes make sealing envelopes fast and easy.No moisture needed to seal! Simply peel off tear strip and seal. Tear off strip keeps adhesive free from dust for a longer shelf life. Sides expand... Add to Cart