The Gravity Bin Feeder with bracket holds up to two pounds of food, roughly a 5 day supply. It features an exclusive snap-lock bracket system that attaches directly to any wire cage. The sifter floor design eliminates pellet dust. It is perfect For Chinchillas, Ferrets, Rabbits, Guinea Pigs, Unusual Pets, and Pet Rats. Product Size: 5.75" L X 5" W X 8" H. Suction cups are available for purchase to hang feeder on glass enclosures.