Particle Containment Envelope, Number of Doors 3, Door Height 80 in, 90 in, Door Width 22 in, 45 in, Window Material Plastic, Number of Windows 4, Window Height 37 in, Window Width 16 in, 22 in, Negative Air Port Dia. 12 in, Vacuum Port Dia. 8 in, Expanded Length 120 in, Expanded Width 29 in, Height 21 1/4 in, Length 14 in, Width 18 1/4 in, Collapsed Height 6 in, Collapsed Length 60 in, Collapsed Width 29 in, 80 in x 40 in Flange, 60 in x 29 in Floor, Envelope Material Synthetic Fabric