GRV-04 zu Serie Silent (2003759) WKA (2591044) CH2OP-50 V23C304050P SOF-N 05/SX 4 V23W + ELM 2574699 WKADET2 02-06 (2591276) 2013001558.1 GKPSCH CH2O P30 REPLACED BY SET WKA 03 SOF-N 05/SX 4 V23W + ELM GKDET2 049-094 GKZE 010-094 ZE1885HCDXM see HWN-40 V22TKHWN40 obsolete, no replacement;Filter WKA 03 (2591011) WKASB1 02-06 (2591269)