Hi. I got my blanket support off ebay for around $28 including shipping. Mine looks like this model.
http://www.hightidehealth.com/essential-aluminum-blanket-support.html?utm_source=googlepepla&utm_medium=adwords&id=22209859648&utm_content=pla&gclid=CNWsvoyGgLUCFQWonQodvV4Auw
http://www.hightidehealth.com/essential-aluminum-blanket-support.html?utm_source=googlepepla&utm_medium=adwords&id=22209859648&utm_content=pla&gclid=CNWsvoyGgLUCFQWonQodvV4Auw