Tunze Osmolator Hose?

4mm ID, 7mm OD, our part numbers are 5000.380 (10m) and 5000.390, (3m), 5000.390 is the stock length that comes with the unit, 5000.380 is about 33ft.
 
So is the 5000.380 is about 33ft the exact same hose that comes with the osmolator? Because you have it listed as 4mm
ID and 7mm OD and I have no idea what that means.
 
Yes, it is the hose that came with it, just a longer length, ID means inside diameter, OD mean outside diameter.
 
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