Sink measures 25-inches by 22-inches by 13-inches deep; one pre-drilled faucet hole;Dual mount installation; can be drop-in or under mounted; easy drop-in installation; no clips required;Durable, hard, non-porous surface is heat, scratch and chip resistant;Fiberglass backing provides additional strength and stability, helps maintain water temperature, and acts as a sound barrier for food disposers;Composite stone sinks have a stain and rust resistant finish and are easy to clean with non-abrasive cleaners