Flexible exhaust connections with overhead support and swivel, with
galvanized hood and with telescoping flex duct support, swivel joints,
swivel base and angle iron duct support arm and support.
From American Conference of Governmental Industrial Hygienists (ACGIH®), Figure VS-65-01, Industrial Ventilation : A Manual of Recommended Practice, 23rd Edition. Copyright 1988. Reprinted with permission.
