Designed for high rise apartment complexes, the APT-331 is small, compact, and totally automatic. Compaction starts automatically when residents fill the chamber with waste often fed to the compactor through a chute system. Your choice of container sizes from two cubic yards to eight cubic yards allows this compactor to adapt to best suit your needs. This compactor is built to last for years and give you up to 3 to 1 compaction. It also comes standard with a hopper, mounted hydraulic power unit, photo eye start system, and specific voltage wiring of your choice. These compactors provide exactly what you have come to expect from SP Industries: superior dependability and low maintenance.