Business Source No. 10 Peel-to-seal Envelopes - Business - #10 - 4 1/8" Width x 9 1/2" Length - 24 lb - Peel & Seal - Wove - 100 / Box - White - Peel-to-seal envelopes feature a self-adhesive flap to create a tight seal without requiring any moisture. White wove finish creates a crisp, distinguished appearance for use in any professional setting. 24 lb. stock adds rigidity to the envelopes to stay strong during shipping. Envelopes are perfect for businesses, schools, personal use and more.