Description Heavy-duty clasp envelopes feature an open-end style, reinforced clasps, and deep gumming on flaps for a secure seal. Metal clasp with rounded edges is plated for rust-resistance. Large flap and superior gumming secure documents inside. 28 lb.These durable heavy clasp enevelops are perfect for mailing documents. Each box includes 100 envelopes. highlights Heavy-duty, 28 lb. Brown Kraft Reinforced-metal clasp with rounded edges is plated for rust-resistance Open-end style construction with large flap and superior gumming secure documents 9″ Width x 12″ Length