Bel-Art Poxygrid 100mm Petri Dish Carrying Rack; 30 Places (H18979-0000) 3 Column; holds 20 dishes These epoxy coated steel wire racks hold 100mm x 20mm plastic petri dishes and are easily loaded and emptied from the top The wide front openings permit easy access but prevent dishes from sliding out, not suitable for glass petri dishes Epoxy coated steel wire is chemical and corrosion resistant and steam autoclavable at 121 degree C (250 degree F) Stacks: 3; holds dishes: 42