Garage is 21x24 with 10' ceilings. I am going to build a 1-5/8" unistrut frame for my 8'x14' grommeted impact screen 1' from wall. I bought unistrut post bases to fasten to floor and would eliminate need for a strut across bottom. Right? A few more questions, should I go with a unistrut across the top or secure screen to studs at 2'OC with bungee/hooks? How much larger should the frame be than the screen? Side and top protection is going to be black tarp mesh from harbor freight. Does anyone see any issues with that?