Playpen Frame

FIG. 1 is a first perspective view of a playpen frame;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a back elevational view thereof;

FIG. 4 is a first side elevation view thereof;

FIG. 5 is a second side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a second perspective view thereof.

The evenly spaced broken lines represent environmental portions of the playpen frame and form no part of the claimed design.