Negative Air Units
Here at Safety Industries, we build our Negative Air Units; or NPU's; in-house. This ensures we build them to the highest standards. Built from polypropylene and with reinforced welds, our Negative Air Units are regarded as the best in the industry.

Our Negative Air Units can be built to whatever style you require. As standard our are fitted with pressure gauges to show the operator when the filter is dirty. They are also fitted with non-return flaps and HEPA (High Efficiency Particulate Air) which are rated at H13 (99.97% efficient) and are compliant to AS:4260.1997.

Available in 240V. Optional extras include audible alarm and flashing light, to alert the operator that the filter is blocked. Speed controls and run timers can also be fitted to these machines.
SI 800 NEG AIR UNIT
Price: AU$2800
Power Consumption : (230v) 420 watts / 1.3 Amps
Transformer Required Continuous Rating : 3kva
Weight : 19kg
Overall Dimensions : 450 x 450 x 375mm
Maximum Airflow with clean filter : 820m³ per hour - 480cfm
Pre filter size : 12 x 12 x 2"
Ducting Size : 6"
Supplied with 1 pre filter.
Fitted with Australian Mains Plug
SI 2300 NEG AIR UNIT
Price: AU$4100
Power Consumption : (230v) 1000 watts / 4.5 Amps
Transformer Required Continuous Rating : 3kva
Weight : 42kg
Overall Dimensions (Incl. Spigot & Castors) : 560 x 490 x 850mm
Maximum Airflow with clean filter : 2300cu metre per hour - 1350cfm
Pre filter size : 15 x 15 x 4 "
Ducting Size : 12 "
Supplied with 1 pre filter.
​Fitted with Australian Mains Plug
SI 5000 NEG AIR UNIT
Price: AU$5700
Power Consumption (230v) : 2000 watts / 9 Amps
Transformer Required Continuous Rating : 3kva x 2
Weight : 64kg
Overall Dimensions (Incl. Spigot & Castors) : 810 x 700 x 960mm
Maximum Airflow with clean filter : 5200cu metre per hour - 3000cfm
Pre filter size : 24 x 24 x 4 "
Ducting Size : 16"
Supplied with 1 pre filter.
​Fitted with Australian Mains Plug
Prices are subject to carriage costs. Please contact us for shipping prices. Unfortunately, we are unable to quote for duties and taxes. It is the your resposibility to cover these charges, once the goods have cleared customs.