No. 10 biness envelopes are good for everyday mailing. Traditional design includes 24 lb. white wove stock; diagonal seams; and fully gummed pointed flaps. Fully gummed flap creates secure closure to prevent peeling during delivery. Cost-efficient design keeps shipping costs to a minimum. 24 lb. stock produces high-quality look and feel. Perfect for binesses schools personal e and more. Sold as 500/Box.