Adjustable filler panels fill in blank spots on the ends of wire mesh partitions to plug up potential security risks. Filler panels come in two sizes: 1' x 4' and 1' x 8' that slide over the ends of existing wire mesh sections. Bolt holes on the filler panels are separated per every inch and allow the filler panel to fill in a space between 6" and 10" wide. The holes line up with holes on the existing panel which are drilled in at the top and bottom to securely fasten the filler panel in two places.