12" x 15-1/2" Heavyweight Clasp Envelopes are an excellent solution for accessible storage or filing. Whatever your home or office needs are, clasp envelopes make staying organized easier. They're also perfect for projects and organizing. Double-prong clasp and reinforced eyelet are durable enough for repeated use. 28 lb. brown Kraft stock is great for extensive handling and mailing. Contents are protected during use to give you assurance they arrive unharmed. 12" x 15-1/2" size accommodates oversized documents without folding. Heavy gumming keeps envelopes securely and permanently sealed when needed.