WATER HEATERΚΑΥΣΤΗΡΕΣ WEBASTOΑΝΤΑΛΛΑΚΤΙΚΑSilencer for combustion air intake 23mm.Compatible with Webasto : Air Top 2000 , Air Top 2000 S , Air Top 2000 ST , Air Top 2000 STC , BBW 46 , DBW 46 , DW 80 , HL 24 , Thermo 50 , Thermo Pro 50 Eco , Thermo Top C , Thermo Top E , Thermo Top EVO , Thermo ..