You will want the bottom of your crossbars to have 3 or 4 fingers of space between that and your roof. The rope and pulley glide smoothly. A microphone is picking up everything Im saying perfectly and typing it for me. The installation kit includes a paper tape to size and place/pre position the rack on the wall which makes this really easy. I miss them. Its a loose fit, but fine for me. They stand up to hours of puddle jumping, mud pie creating, and general kid craziness. Using it from 2 floors below my router. I would consider this a professional microphone for home users and hobbyists. if you spray it in your shirt the same loss of fragrance will occur after about 7 hours (tops).