Comparison : Item # M-15-AL, 50 cfm Capacity Air and Oil Cooler
Item # M-20-AL, 80 cfm Capacity Air and Oil Cooler
Item # M-25-AL, 150 cfm Capacity Air and Oil Cooler
Item # M-30-AL, 240 cfm Capacity Air and Oil Cooler
Item # M-15-AL-FS, 50 cfm Capacity Air Free Standing Aftercooler