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

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

Supply Air Plenum, 20 x 20 x 36 in, For RUUD 21 in Cabinet With Aspen Coil

Supply Air Plenum, 14-1/2 x 19-1/2 x 36 in, For GE 21 in Air Handler

Supply Air Plenum, 19-3/4 x 20-1/4 x 36 in, For RUUD 21 in Cabinet With Aspen Coil

Supply Air Plenum, 19 x 22 x 36 in, For RUUD 21 in Cabinet With Aspen Coil

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

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

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

Supply Air Plenum, 16 x 20 x 36 in, For GE & RUUD B Cabinet / 17 in