Return Air Boxes

12 X 12 Return Air Box SHMRAC301212

20 X 12 Return Air Box SHMRAC302012

20 X 14 Return Air Box SHMRAC262014

20 X 16 Return Air Box SHMRAC6302016

20 X 20 Return Air Box SHMRAC302020

24 X 12 Return Air Box SHMRAC302412

24 X 24 Return Air Box SHMRAC302424

25 X 14 Return Air Box SHMRAC262514

25 X 16 Return Air Box SHMRAC262516

25 X 20 Return Air Box SHMRAC302520

30 X 20 Return Air Box SHMRAC628302