Cheap insulation. Is there such a thing?
Something like this?
http://www.lowes.com/pd_409814-56291-BP48100_4294858104__?productId=3775461&Ns=p_product_qty_sales_dollar|1&pl=1¤tURL=%3FNs%3Dp_product_qty_sales_dollar%7C1&facetInfo
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How does that attach?
Print