MultiSmart™ extraction arm’s unique, clear-thru design, is providing a completely un-interrupted airflow and the lowest pressure loss of any arm on the market. Maintaining high airflow without turbulence eliminates the build-up of particulate and reduces the cost of maintenance. The safety-encased arm mechanism is outside the air stream producing “one touch” smooth movement combined with outstanding stability. The MSA is versatile, light weight and safe providing unsurpassed air flow, ergonomic design, and easily accessible controls.