im just looking for a unbent aluminum sheet like the stuff you would use to make the ventilation ducts out of....size 7ft x 3ft or something close. i dont want to go to lowes and get one of these http://www.lowes.com/lowes/lkn?action=productDetail&productId=86729-228-RV800010&lpage=none ..... and have to straighten it out. thanks let me know