Bazic 40 #10 Self-Seal Plain White letter Long Security Envelopes All Purpose (4-1/8″ x 9-1/2″) • 40 envelops/box• Peel and seal closer for convenient, no need of adhesive• Perfect for all purpose daily mailing needs for home and office• Made out of No. 10 quality paper material for perfection• 4-1/8″ x 9-1/2″ (10.4cm x 24.1cm)• You will receive 1 box