CFM

Turning an inline duct fan into an air filtration system. I made this to be portable, but you can add hardware to hang it. All my woodworking plans **********Materials List (Affiliate Links)********** Note: Working on the “Plans” for the this. ▸ Half sheet of plywood ▸ Inline Duct fan (4440 CFM) ▸ Filter: ▸ Filter … Read more