Quality Park #10 Business Envelopes, Gummed Seal, White, Box Of 500 - Quality Park Envelopes are essential for home and business use. These 24 lb white wove envelopes can be used for professional mailings and home projects alike. Each business envelope has a moisture seal commercial flap. Laser printer and inkjet printer compatible so you can personalize mailings; side seams provide more surface area to print return addresses, logos or other graphics.