Here's what other sites are saying:
The Muka Windscreen & Heat Reflective Sheet from Soto is designed to improve the burning efficiency of their Muka Stove.
Improve the performance of your Soto Muka liquid-fuel stove (sold separately) in gusty conditions with this replacement windscreen.
Soto Micro Windscreen
MSR Heat Exchanger
Snow Peak GigaPower Windscreen
Optimus Vega Windfoil
GSI Outdoors Pinnacle Dualist Windscreen
MSR Solid Heat Reflector with Windscreen
$13 - $14
Olicamp Convector Windshield