This handy Frost Fighter electric greenhouse heater gives you the upper hand in the battle to keep your greenhouse above freezing throughout winter & well ventilated throughout the summer months. Packed with features this 21cm H x 20cm W greenhouse or conservatory heater can be switched between 1 or 2kw heat settings has an integral thermostat for completely automated control control & like all good heaters a 'frostwatch' function which kicks the heater into use once the temperature falls below 5°C. The Frost Fighter takes safety seriously too; the heater is both splash proof & IPX2 rated drip proof for complete peace of mind when heating the greenhouse.