Drainage Hose - Bottom Drainage Hose Inner :- 
Diameter 10mm
Outer Diameter 14mm
Length 30cm 

Suitable for these models:-
ARTICA - ARTICA MK2 - CRYSTAL - GELO -APOLLO -  12P - 8P

This fits to :

Drainage Kit Rubber Plug - ARTICA - ARTICA MK2 - CRYSTAL - GELO - APOLLO - DC12 - DC14 - DC18 -8P