Keep your documents, letters, invoices, and business correspondence secure with these 9 × 4 inch white envelopes, made from durable 90 GSM paper. Featuring a convenient Peel & Seal self-sealing closure, these envelopes can be securely sealed without the need for glue or moisture, making them quick and easy to use. The clean white finish provides a professional appearance, while the sturdy paper construction helps protect contents during handling and mailing. With 250 envelopes per box, they are ideal for offices, businesses, schools, institutions, and bulk mailing requirements.