BH150 N means number of plates . L (mm): 610 . H (mm): 1,815 . E (mm): 1,294 . LC (mm): 3,000 . Connection Size (mm): 150 . Max Number of Plates (N): 600 . Max Flow Rate (m3/h): 360 BH150H . L (mm): 610 . H (mm): 1,815 . E (mm): 1,294 . LC (mm): 3,000 . Connection Size (mm): 150 . Max Number of Plates (N): 600 . Max Flow Rate (m3/h): 360