double-wall polystyrene-core sides for year-round compost production with patented "lung" system, and 4 gal reservoir collects leachate - dilute to make "compost tea" Absolutely no turning required - drop waste in at the top - later remove through bottom side doors. Processes similar capacity as 3-4 110-gallon composters. Size: 29" W x 29"L x 47"H