Hey all, the names jason and am new to the site and will be graduating this spring from tech school. Trying to get the post count up so I can apply for pro membership so here is my first question. I work at a large church and in the bookstore of the church the duct system is very noisy, what's are some effective or practical ways to dampen some of the noise? Off the main branch there are 6 supply branchs(flex) that are fed into the room. When I initially checked all six dampers on the supplies, they were all pretty much in the all the way closed position,opened some up/ adjusted and noise came into room instead of just bring in the ceiling, so it magnified the problem. Any advice would be greatly appreciated. Thanks.