Do-it-yourself air purifier: Levoit Core 400S adapter and cap

This is a set of adapter + cap to allow you to connect 6 in / 150 mm ducting to a Levoit high performance Core 400s HEPA filter to an ducting fan as a heavy duty air purifier for resin printing and laser cutting. Better as an intake but I use it as an exhaust.I recommend using the green VOC / chemical fumes specific filter.The caps just snap in, seal the tubing with duct tape.