Quality Park Clasp Envelope, 6 x 9, 28lb, Brown Kraft, 100/Box Reusable envelope is ideal for office, school and home use. Durable double prong metal clasp and reinforced eyelet. Heavily gummed flap closure. Envelope Size: 6 x 9; Envelope/Mailer Type: Catalog/Clasp Mixed Colors; Closure: Clasp/Gummed Flap; Trade Size: #55. Deep gumming for a secure seal.Quality Park