Supply Air Plenum, 14-1/2 x 16-1/2 x 36 in, For GE 17 in Air Handler

Return Air Plenum, 19-1/4 x 21 x 24 in, For GE 21 in Air Handler

Supply Air Plenum, 11-5/8 x 20 x 36 in, For GE Connect

Supply Air Plenum, 13-1/2 x 11-1/8 x 36 in, For GE Small Packaged Unit

Supply Air Plenum, 10-1/2 x 20 x 36 in, For RUUD 21 in Air Handler

Return Air Plenum, 16-1/4 x 21 x 24 in, For GE 17 in Air Handler

Supply Air Plenum, 10-1/2 x 16-1/4 x 36 in, For RUUD 17 in Air Handler

Supply/Return Air Plenum, 19-1/8 x 11-1/8 x 36 in, For GE Large Packaged Unit

Supply Air Plenum, 13 x 19 x 36 in, For GE A Cabinet

Supply Air Plenum, 19 x 20 x 36 in, For GE C Cabinet