Personnel are protected by a 4.7mm thick, clear polycarbonate barrier with exceptional impact resistance and optical clarity. Shields meet High Mass Impact Test and High Velocity Impact Test as defined by ANSI Z87.1, sections 9.11 and 9.12, respectively. Stable, three-sided construction provides front and side protection against flying debris. Heavy steel base is coated with blue epoxy. Plated steel bolts, nuts and washers are used for assembly ensuring long life and rust-resistance. Outside base dimensions are 50cmW x 17cmD (19½ x 6½˝). This item ships oversize.