The Marshall High-Back Litter Pan is ergonomically designed for the unique habits of ferrets and integrates the best features of regular and corner pans. A low profile front opening measuring 9w x 5h and high 7 inch corners. Ergonomically designed for the unique habits of ferrets and integrates the best features of regular and corner pans. A low profile front opening measuring 9 inches wide x 5 inches high and high 7 inch corners are tall enough for ferrets back.. Plastic