Besides online? I want to put some damping sheets in my sub, and want to know if what stores, if any, sell it. Also, I bought some Fairfield brand Polyfil from Walmart. It says on it that it meets the requirements of CA Bureau of Home Furnishings Technical Bulletin 117. Care should be excercised near open flame, etc. Will this be ok inside the sub? It's a stupid question, I'm sure, but I've never done this before, and I want to make sure I don't ef anything up. Thanks.