BH60 N means number of plates . L (mm): 320 . H (mm): 930 . E (mm): 640 . LC (mm): 1,200 . Connection Size (mm): 60 . Max Number of Plates (N): 250 . Max Flow Rate (m3/h): 36 BH60H . L (mm): 320 . H (mm): 930 . E (mm): 640 . LC (mm): 1,200 . Connection Size (mm): 60 . Max Number of Plates (N): 203 . Max Flow Rate (m3/h): 36