Quality Park, #10 Business Envelopes, Gummed, White, 500 per box (11112) GUMMED FLAP: Provides users with ease of mind that their contents will stay securely closed DURABLE: Heavyweight 24-lb. paper stock ensures no rips or tears PROFESSIONAL FINIISH: Bright White paper makes for a fresh, clean appearance perfect for any use. GREAT VALUE: Every box comes with 500 gummed envelopes that are so versatile they can be used for multiple purposes. MULTI-PURPOSE: Use these white wove envelopes as office envelopes, interoffice envelopes, storage of documents, etc.