Air flow is directed away from walls, steel sheathed element - heating element design combines the durability of a steel tubular heater with the excellent heat transfer characteristics of aluminum fins|Roomy junction box - large, identical, pre-wired junction boxes at each end are provided with knockouts in the rear, bottom, inside and outside junction box walls, dual and triple ratings allow 16 models to cover 40 variations of wattage and voltage|Maximum convection design|Carton of 10, FS12 1 ft, FS24 2 ft, FS36 3 ft, FS48 4 ft filler section, FSJ2 2 in joiner strip|250 W/ft standard density|Installs Quickly and Easily Wire up and connect this baseboard quickly and easily with its large wiring compartment, dual knockouts and built-in cable clamp|Optimum Efficiency For maximum efficiency, the unit converts all incoming electric energy into heat, according to Department of Energy standards|Fast-Acting Warmth Convection heats the room rapidly, without uneven hot and cold zones, providing comfort from floor to ceiling|Fewer Allergens in the Air Heat your space without kicking up dust or other allergens, The natural convection airflow doesn't rely on a blower or fan to move warm air throughout the room