After https://www.ozbargain.com.au/user/197592 asked for a free mask deal, wanted to share the cheapest P2 mask with a side valve available on the market. Find the ones with the front valve to be uncomfortable and its quite difficult to find the side ones at the moment. Bunnings is sold out of both the Bear brand and 3M https://www.bunnings.com.au/bear-disposable-p2-respirator-du…. Found these guys sent them out quickly and arrived same week.
Edit: This was not posted as a preventative measure for the virus. Its become quite difficult to find these for use in construction.
Valved Masks are not recommended in preventing COVID19 transmission as the virus can pass through the valve if the wearer is infected - VIC CHO