Joe Ayers from Captive Free Ministries in Talbott, TN brings us these filter boxes and particles on their back wall.
They started off their design by creating air filter boxes the same way they did in the Air Filtered design. They simply duct taped air filters together to create the box towers.
Then they hung black fabric behind the boxes to black out their stage. They added aluminum foil and broken mirrors to the fabric to look lie particles. And this is the end result.