#10 security envelopes with a tinted interior pattern to help conceal sensitive information during mailing Windowless front panel suited for business documents, legal paperwork, and other private correspondence Self-seal closure with a strong adhesive strip designed to create a secure seal across the flap Size: 4-1/8 x 9-1/2 inches Paper weight: 24 lb White envelopes with a professional appearance for everyday office or mailing use Can be addressed by printing, labeling, or handwriting Compatible with most inkjet and laser printers Suitable for routine business mailings, home office use, and larger mailing projects Pack includes 250 envelopes