AtomStack Filter Holder for A48 Ultra head

Remixed from the iKier K1 Pro Max 48W/24W model, my A48 socket was in a slightly different location so I had to lightly mod the holder and the grid.
This is intended to hold a low-restriction filter (I use the black A/C filters cut to size) to help reduce the amount of smoke and varnish that runs through the laser heads' cooling fan and heat sink.