A printing cartridge including a body, the body having a base and a tower defining
a passageway. The tower is made from a first polymer material, and has a proximal
end and a distal end. The proximal end is attached to the base. The distal end
includes a surface. A frame, made of a second polymer material different from the
first polymer material, is attached to the surface of the tower. A filter is attached
to the frame and positioned to extend over the passageway.