Primus windscreen and heat reflector set product description for omnifuel multi fuel gravity varifuel easy fuel and express spider stoves increases heat output and shortens cooking time the aluminum heat reflector focuses heat on the pot and preheating coil features save fuel save money save the environment specifications item 721720 height 750 mm 295 inches width 150 mm 59 inches diameter 250 mm 98 inches weight g integer 87 g 31 oz ignition ny