Is it too late to make the outer footbox panels out of stainless? Stainless is a very poor conductor of heat and that would go a long way to keep the heat from spreading to other panels.
Perhaps even some stand-off heat shields connected to the pipes to cut down the radiant heat. Make them of stainless and clamp them to the pipes with hose clamps.
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Carey Culpepper
TuckPuck® Metal Shaping Tools
www.tuckpuck.com
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