Box of 500 No.10 security envelopes (4 1/8” x 9 1/2”). White color, self-seal closure, and security tint to protect confidential information. Ideal for letters, invoices, documents, and office correspondence. Top Flight brand, high quality and durable. ✅ Standard No.10 size (4 1/8” x 9 1/2”) ✅ Interior security tint for privacy ✅ Self-seal closure, no moisture required ✅ Color: White ✅ Quantity: 500 envelopes Perfect for businesses, home offices.