http://nexflowair.com/air_ionizer_silent.php Compressed air enters at the rear (or end) ports at (A) of the Standard Air Blade (B). )(See Standard Air Blade TM for a description of its operation). Entrained air follows the coanda profile of the air knife and along the front face flowing over the ionizing (static) bar (C) creating a fine sheet of ionized air along the entire length of the Air Blade TM ionizer at it leaves the air knife at point (D). The amplified air stream maximizes velocity and force and provides a well-defined sheet of ionized laminar flow for reduced energy use in the blow off of statically charged surfaces and to remove static at long distances from the assembly. For highly charged surfaces a stronger static bar is available (Triple X Air Blade ionizers).