This Black 5-Tray Worm Composter is a China-made single-box 50L worm farm kit, crafted from BPA-free HDPE plastic with UV-resistant performance, suitable for both indoor and outdoor use.Sturdy and durable, it won’t degrade in direct sunlight and features a compact assembled size (16.93"L×16.93"W×12.99"H) that saves space.With a large 50L capacity, it processes several pounds of food waste weekly and holds thousands of worms, the 5-tray design with a tap-equipped collection base is expandable for additional trays (empty:15.75"x15.75"x16.14", full load:15.75"x15.75"x25.59").Boasting enhanced ventilation with a built-in M-Board and coconut pad, it reduces odors and prevents worm mortality from overheating, achieving high composting efficiency and producing nutrient-rich organic fertilizer (worm castings/worm tea) in just 4-5 weeks.No professional installation is needed—follow 4 simple steps to assemble in minutes, ideal for vermiculture, vermicomposting and food waste recycling.