A typical example is given in the Figs., showing elevation, plan, and cross section. Slat conveyors are used largely to carry substances in bags, also general merchandise packed in boxes and crates, or made up in pieces or bales. They can be made partly horizontal and partly inclined, and with either a single or double strand of chain, to which are bolted a series of narrow boards or slats (usually from 1 to in. thick), forming a continuous travelling platform.