The Gram Strainer for Suction Filter is a filtration component designed to capture large particles and debris from the suction line before the refrigerant enters the compressor. It acts as a pre-filter to protect the main filter element from clogging and ensures that only clean refrigerant is drawn into the system. By preventing contaminants from reaching critical components, the strainer helps maintain system efficiency and extend the lifespan of the compressor and other equipment.