The 400-3 card rack expands to accommodate 25 of any time card or document between 2.5" and 5" in width, and 2.25" and 10" in height. It is easy to adjust to your time card size. The time card rack is made of heavy-duty industrial plastic that will not bend, chip or dent. It accommodates 25 cards, is Light Gray, and can be used indoors or out. Mounting hardware is included.