Abstract: A sealable housing for electrical components comprises an extruded main body having a first end and a second end, the extruded main body defining a longitudinal axis and having an outer wall and a substantially cylindrical bore. Two end caps are removably sealably attached to a respective one of the first and second ends of the extruded main body to define, together with the substantially cylindrical bore, an electrical component chamber. Thickened longitudinal outer wall segments extend radially outwardly from the cylindrical bore. The electrical components are mounted within the electrical component chamber by being conventionally attached to a trolley, which trolley is longitudinally interfitted to a mounting track contiguous with the extruded main body. The extruded main body is preferably constructed from aluminum.