12 x 15 1/2″ White Self-Seal Envelopes (EN1071) Case Of 500

12 x 15 1/2″ White Self-Seal Envelopes. Self-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. Constructed from durable 28 lb. paper stock.