Before I blow my self up I want to see if the experts here approve of my planned paint booth. I will be building it in my garage. It will be 24 ft long and 16 wide. The frame will be 2x4's and covered with a thick plastic from home depot. the floor will also have plastic on it. A small door will be built in one side near the front of the car. Now for the important stuff....ventilation. I was planning on two large house a/c heater filters duct taped into the front plastic wall( they will be centered on a 2x4 for support). After the car is in the booth and the back wall is in place a third filter will be installed in this wall at the bottom and in the center. I will use cardboard to make a duct from around this filter to a 24 round fan. The cardboard ducting will then continue out the garage . Have I made a fire ball device or is this a good set up for a home made paint booth?......