Abstract: A filter device for an air cleaner includes a frame having four sides beams and four corner members. The beams each has an outer plate and two bars for forming a chamber and for receiving the peripheral portion of a filter element, and for preventing particles from bypassing the filter element and from entering into the air cleaner. An adhesive material may be engaged between the peripheral portion of the filter element and the beams for solidly securing the filter element to the beams. A peripheral member may secure the corner members and the beams together.