Hydrofarm LGCKT2 Plants Cooling Kit Use this light system cooling kit along with 4-feet aluminum dryer ducting to exhaust heat and cool your growing are in warm climates This method can be used for a single stand-alone light to simply exhaust warm air Kit includes two exhaustfan flanges, one vent cover, three mounting screw packs, one 20-feet self-adhesive weatherstrip You can also use vent covers to block unused ports This method can be used for a single stand-alone light to simply exhaust warm air