At RentACoop we understand your time is valuable and your flocks wellbeing is important. You can go away comfortably knowing your feed is dry and available for your feathered friends. No more rushing home to feed, or depending on others when you go away. Our 25lb feeder can feed 6 hens for 10 days and the 40lb can feed 12 hens for 10days. Add this 15lb extension to your 25lb feeder to make a 40lb feeder, or up to 3 extensions for a maximum of 70lbs . Our system is designed to give you peace of mind knowing you are saving money by not having wet, wasted or stolen feed. Still have questions, our personable customer service team is happy to help.