[acoustat6]

Hi Atledreier, I guess its just two types! Broadband with the fabric covers, some are 4 inch thick (walls, with air gap) and the ones on the ceiling are 1 inch thick with air gap behind them. The other "two' types are 1/8th inch panel and 1/4 inch panel traps. There are broad bands in the corner 4 inch thick. So yea, I guess "the number shall be two".


Bob