Rectangular Air Filter

FIG. 1 is a top down disassembled perspective view of the rectangular air filter; FIG. 2 is a top down assembled perspective view of the rectangular air filter; FIG. 3 is a top down view of the rectangular air filter; FIG. 4 is a bottom view of the rectangular air filter; FIG. 5 is a front end view of the rectangular air filter; FIG. 6 is a rear end view of the rectangular air filter; FIG. 7 is a right side view of the rectangular air filter; FIG. 8 is a left side view of the rectangular air filter; FIG. 9 shows a perspective view of the rectangular air filter in an alternate configuration; and, FIG. 10 shows a perspective view of the rectangular air filter in another alternate configuration. The broken lines shown in the figures are for purposes of illustrating portions of the environment and form no part of the claimed design.