50 sq. ft. Reynolds Wrap Heavy Duty Aluminum Foil $3.05 at Amazon
Amazon has the 50 sq. ft. Reynolds Wrap Heavy Strength Aluminum Tin Foil for $4.68 - $1.40 off coupon (check "Save an extra" box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel at any time)=
$3.05 with free shipping on $25+ or with Prime. Heavy duty aluminum foil stands up to the demands of extra-high heat.
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