RBAYSALE Filter Improves Water Odor with a 3-Stage Filtration System, Protecting Your Pet's Health - Brand: RBAYSALE - Product Type: Pet Filter - Filter Function: 3-stage filtration system - Effect: Improves water odor and taste - Health Maintenance: Protects pet's health - Product Dimensions: 12.5 length x 12.5 width x 1.3 height cm Thank you for viewing. This is a filter for a pet water fountain. I no longer need it because I replaced the water fountain after it broke. There are 6 unopened filters and 1 opened, unused filter, for a total of 7 filters. To reduce shipping costs, I will send only the contents without the box. If you need the box, please contact me. (The price will increase.) Please check the brand and shape before considering a purchase. Shipping is planned via Nekopos or Yu-packet Post.