The ornamental design for an offset paintrollerframe, as shown and described.
FIG. 1 is a front perspective view of an offset paint roller frame showing my new design, the broken lines showing a roller cage and a handle being included to illustrate environmental structure which forms no part of the claimed design.
FIG. 2 is a front elevational view of the frame embodying the design, the rear elevational view being a mirror image thereof.
FIG. 3 is a left side elevational view thereof.
FIG. 4 is a right side elevational view thereof.
FIG. 5 is a top plan view thereof.
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a view related to FIG. 1, but is a rear perspective view therof.