The Leo Envelopes DLB Manilla Self Seal With Window 25 Pack provides high-efficiency 110x220mm corporate correspondence mailing layouts. The transparent front window showcases pre-printed recipient data perfectly. It speeds up high-volume invoice processing runs significantly. A reliable peel-and-stick adhesive track provides secure permanent closure. It saves mailing time by eliminating manual envelope handwriting. The classic manilla finish offers a highly practical layout.