The Uline Packing List Envelopes, model S-206, are 4-1/2 x 5-1/2″ in size and come in a pack of 100 count. These envelopes are designed for packing and shipping purposes, making it convenient for businesses to include important documents or notifications with their shipments. With a compact size and durable construction, these envelopes are ideal for handling a variety of items and ensuring they are securely delivered to the intended recipient. Item #131A