To cover an area of 0.27-0.46m². To provide cost effective and accurate temperature control one of our rod type thermostats should be used. Suggested temperatures are - for hot beds and propagating frames 14ºC - 16ºC and for bench mist propagation 21ºC - 23ºC. A range of sizes is available for both the amateur gardener and the commercial grower. Ideally the HD9082/92 thermostats should be used with this cable.