I bought 2 used boaphiles....one ball room rack and one older model 28 quart....from 2 different people. Well, the ball room rack works great....but I got hosed on the 28 quart.........I should have known better I guess. So, now, how can I install flexwatt in the spaces so that I can still use the rack? Or, do I just eat the $200.00 (which is a big GULP right now) and try making a DIY one??????????????????????????