A reciprocating slat conveyor includes a plurality of side-by-side support beams (12) and conveyor slats (14) which fit onto the support beam (12). The support beams (12) are constructed from metal. The conveyor slats (14) are constructed from plastic. In one embodiment (FIGS. 1-4) the plastic slats (12) are snapped fit onto the support beams (12). In some other embodiments (FIGS. 6 and 7) the conveyor slats (110, 112) are slid lengthwise onto the support beams (102).