Davis Instruments Fan Aspirated Radiation Shield Kit Daytime 7747. Half the cost of our 24-hour fan aspirated radiation shield but nearly 75percent as effective in reducing the effects of daytime radiation. Solar-powered fan runs during the day....
Davis Instruments Fan Aspirated Radiation Shield Kit Daytime 7747. Half the cost of our 24-hour fan aspirated radiation shield but nearly 75percent as effective in reducing the effects of daytime radiation. Solar-powered fan runs during the day....