Abstract: An elongated wall mounted electric space heater is constructed of an elongated trough-like wall box having junction boxes at both ends thereof, and a single subassembly including a finned straight resistance heater element, a housing surrounding the heater element, the housing being elongated and generally rectangular in cross-section and including a U-shaped front cover section secured at the ends of its U-arms to a rear member supporting the heater element, and thermal cutout means mounted on the rear member of the housing and connected in circuit with the heater element. The housing includes apertured upper and lower generally horizontal walls to facilitate the flow of air between the fins of the heater element. Low resistance conductor loops extend into the respective junction boxes and connect opposite ends of the heater element to opposite ends of the thermal contact means.