The large AutopetFeeder is designed for feeding medium size pets (Pet weight greater than 25 lbs) at per-determined times of day and preset quantity of food. Other sizes are available to accommodate for different size pets. The large AutopetFeeder holds 20 lbs of dry pet food. The Large AutopetFeeder is designed for food pellet size of 7/8 inch (max) and any shaped food. The unit consists of a storage container, a feeding bowl and an 8 setting programmable digital timer. The digital timer can be programmed to feed pets up to 8 times a day, all through the week and throughout the year. The unit can be programmed to release small quantities such 4 to 5 kibbles of food if necessary. This is very convenient to feed diabetic pets and pets with eating disorders. The large opening in the food store bin of the automatic pet feeder enables easy fill of pet food. A flexible stainless tube sheath (coated with plastic) protects the power cord and prevents pets from chewing on the cord. The feed bowl can be easily removed, cleaned and is dishwasher safe. Pet food does not have to be emptied from the storage container to clean bowl. Metal over molded self-lubricating nylon auger prevents jamming and provides a smoother and quieter performance. An agitator in the medium unit provides for ease of food flow to the auger for larger size food. Slow dispensing of food prevents the feed from piling up and also prevents the pets from eating too fast and suffering from indigestion and bloat. The feeder container and the base come pre-assembled to make it more user-friendly and convenient for use. UL approved and veterinarian recommended. For more information on the product please call 1 � 888 � ERGOSYS.