US D383201 S
FIG. 1 is a perspective view of the design for dual humidifier tank unit in accordance with the present invention;
FIG. 2 is a top plan view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a right side elevational view thereof; the left side being a mirror image of that shown;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a rear elevational view thereof.
The broken line showing of a a humidifier housing in FIGS. 1-6 is for illustrative purposes only and forms no part of the claimed design.