We have three different types L, M and H.
H type is with high heat transfer but have also the highest pressure drop. H type is good for condensers and can sometimes be used as an evaporator. H type is also recommended for tap water system and as oil coolers.
M type have medium heat transfer and with much lower pressure drop than the H type. M type is good as evaporator and is also highly used as condensers. The M type can be used for almost all applications.
L type is with low pressure drop and should only be used when low pressure drop is requested. L type is used for radiator water systems.
 

There is six different sizes Pico9, 29, 39, 59, 89 and 259 models
The Pico9 size is 80x200 mm with 10 to 60 plates, Model 29 size 116x522 mm from 14 to 80 plates. Model 39 size 195 - 365 mm from 14 to 200 plates. Model 59 262x524 mm from 30 to 150 plates. Model 89 size 290x700 mm from 50 to 300 plates. Model 259 size 524x1200 mm from 50 to 400 plates.