Abstract: Disclosed herein is technology related to a heater device and corresponding systems and method. In examples the heater device has a frame having a base structure and a support beam. The support beam extends upward from the base structure. The frame is translatable across a ground surface. A cantilevered elongate heater extends from the frame. The elongate heater has a proximal end and a distal end, where the proximal end is coupled to the support beam of the frame. In some examples the elongate heater has a first heater element rotatable about an elongate axis central to the elongate heater. Additionally or alternatively, a plurality of heater elements are coupled to the cantilevered beam.

Abstract: An exhaust treatment assembly is provided, which includes a plurality of first grid members. The assembly also includes a plurality of second grid members engaged with the first grid members, the grid members are arranged to form spaces. A plurality of exhaust filter elements is disposed in the spaces and forms an exhaust filter block. A first side wall is engaged with the first grid members, and is adjacent a first edge of the filter block. A second side wall is engaged with the second grid members, and is adjacent a second edge of the filter block. An insulator is located between the first side wall and the first edge of the filter block, and located between the second side wall and the second edge of the filter block.