The Thermo King 900 Composter can be easily assembled without the need of tools using the Easy-Lock assembly system. The two large, hinged access panels make it easy to use and features an optimized ventilation system for maintaining the ideal temperature. This design makes it the ideal composter for people who live in cooler climates.This modern-looking composter is made of environmentally friendly recycled plastic that is UV and weather-resistant. The walls of the 900 liter (240 gallon) Thermo King compost bin are made of Thermolen which offers outstanding insulation. Heat retention is important to the composting process, and this UV stable material provides the ultimate in thermal insulating.