This is a full box of 3 3/8” x 6” envelopes. The box says 100, but not sure if there are still 100 in the box – it is still really full. Comes in the original box – cool old box. The product is a set of Karolton Klasp envelopes measuring 3 3/8 x 6 inches, manufactured by The American Envelope Co. These envelopes come with a box for storage and organization. Ideal for business and industrial use, these envelopes are designed for efficient packing and shipping, making them a practical choice for mailing and packaging needs. The Karolton Klasp model ensures a secure closure and protection for your documents or items being sent via mail. Fast & Secure Shipping. (Item #3994)