These stackable ESD A4 Document Trays from BJZ are made from conductive plastic that helps to prevent the creation and build-up of electrostatic charges. * Black colour * 330 x 240 x 60mm (L x W x H) * made from conductive polystyrene (PS) * 104 Ω surface resistance * Manufacturer's part C-199 975 * Trays are sold singly