Backyard Composter - This composter is perfect for someone who  needs only a moderate amount of compost. The Compact ComposTumbler is 43 inches high x 42 inches wide x 33 inches deep and stands 12 inches off the ground. It holds 9.5 bushels, or about 90 gallons of compost material, and inside mixing fins help break up large pieces of compost. The combination of an aerator/drainage port on the door of the composter and screened endcap vents makes sure your compost gets the proper amount of oxygen while preventing compost from spilling out. 5 year manufacturer warranty.