MICRO AIR AIR CLEANERS REVOLUTIONARY ROTO-PULSE CLEANING SYSTEM DUAL ARM CAPABILITY VORTEX AIR FLOW PATTERN QUIET OPERATION HOOD MOUNTED CONTROLS LIGHTED HOOD FOR IMPROVED VISIBILITY SWIVEL HOOD OPTIONAL HEPA AND CHARCOAL MODULE DIRECTED DUCTED-NO BY-PASS OPTIONAL AUTOMATIC AFTER PULSE CLEANING MODEL #:1500 MODEL #:  270BCC