Our Carbon Infused Media Pads are great for removing discolorations in your aquarium water, toxins, medicines, and absorbing odors. Our Carbon pads come in a rigid 17.5 inch long and 9.8 inch wide pad. They are easy to cut to any size you need for your filter. They come folded in half and may we may need to fold them again to fit them in your shipping box. Also a great secondary polishing pad to remove unwanted waste and particles!