The product is 2 sets of 24 pack of Adams 1099 Double Window Peel and Seal Security Envelopes. These envelopes are specifically designed for processing 1099-NEC tax forms, providing a secure and tamper-evident method for mailing sensitive documents. The double window design allows for easy addressing without the need to pre-print the recipient’s address on the envelope. The peel and seal feature ensures that once the envelope is sealed, it cannot be easily opened without damaging the contents, providing added security for sensitive information. 3 3/4” X 8 3/4”