The Model 4 is an incinerator designed for the safe and efficient disposal of clinical, pathological, and confidential waste, including hospital materials, veterinary specimens, and sensitive documents. It is available in two capacities: Model 4 processes up to 220kg per hour, while Model 4b handles up to 270kg per hour, depending on the waste type and properties. The unit features primary and secondary chambers with integral burners, anchored high-grade composite lining, and a venturi panel to minimise fly-ash and dust emissions. Additional features include a steel chimney, double doors for continuous loading and full ash access, low utility consumption, electromagnetic safety door lock, and manometer natural draught indicator.