Protector® XL bypass airflow fume hoods with chemical-resistant panel liners offer max visibility of 73.5 in. high. Allowing operation down to 60 fpm, hoods with vertical-rising sashes meet SEFA-1 standard. Widths of 4, 5, 6, and 8 ft are available. Containment-enhancing features include 2 tempered safety glass sashes with powder-coated aluminum sash handles and powder-coated steel sash tracks with Clean-Sweep slots. Hoods with 4 horizontal sashes are available in 8, 10, 12, and 16 ft widths.