I want to straddle the corners with these Roxul but the R30 is only 7.25". I'm gonna put them in frames and straddle the corners plus I'll have a few extras to use as Gobo's as needed. I've only ever used OC 703/705 before. Are these Rockwool traps going to be effective? We have some SERIOUS nulling and bass issues in our basement studio with 7 ft ceilings. These traps will be floor to ceilding in corners plus all the other locations. Can't find any compressed around here and I have a Lowes card so this is what I can get. Will this stuff work for trapping?