FIG. 1 is a top perspective view of a blood filter housing of the invention;

FIG. 2 is a top plan view of a blood filter housing of the invention;

FIG. 3 is a rear elevation view of a blood filter housing of the invention;

FIG. 4 is a bottom plan view of a blood filter housing of the invention;

FIG. 5 is a front elevation view of a blood filter housing of the invention;

FIG. 6 is a right side view of a blood filter housing of the invention; the left side is a mirror thereof; and,

FIG. 7 is a bottom perspective view of a blood filter housing of the invention.