Return Air Plenum, 13 x 24-1/2 x 24 in, For RUUD 14 in Cabinet

Return Air Plenum, 16-1/2 x 24-1/2 x 24 in, For RUUD 17 in Cabinet

Return Air Plenum, 20 x 24-2/5 x 24 in, For RUUD 21 in Cabinet

Return Air Plenum, 23 x 20 x 24 in, For RUUD 24 in Air Handler

Return Air Plenum, 20 x 24-1/2 x 24 in, For RUUD 21 in Air Handler

Return Air Plenum, 16 x 19-3/4 x 24 in, For RUUD 17 in Air Handler

Return Air Plenum, 13-1/2 x 23 x 24 in, For GE B Cabinet

Return Air Plenum, 21-1/4 x 21-1/4 x 24 in, For GE Connect Small Cabinet

Return Air Plenum, 16-3/8 x 20-1/2 x 36 in, For RUUD Packaged Unit

Return Air Plenum, 20-1/4 x 23-1/2 x 24 in, For GE C Cabinet

Supply Air Plenum, 12-3/4 x 20-1/4 x 36 in, For RUUD 14 in Cabinet With Aspen Coil