I needed to make a new one for the new MSR expedition stove, so this one needs a new home, no idea of the weight as my postage scales are broken, sub 150 grams.
.8mm aluminium foil flashing, 3mm hardwood ply and 10mm Karrimat.
Glued with high temperature roofing silicon and essential for using a stove on snow.
$3- plus postage which will be much cheaper than making your own
Large letter postage will be about $3- depending on where you are.
Whoops, forgot the size so "EDIT"
150mm * 220mm * ~15mm