Click to expand Tap to zoom Viessmann Valve fittings cover for device width 400 mm by VIESSMANN SKU ZK06090 Valve fittings cover. Valve fittings cover for boiler width 400mm: SKU ZK06090 Supports Vitodens 050-W Combi 25kW ( 7959979 ) & 30kW ( 7959980 ) Complete with fittings https://viessmanndirect.co.uk/Catalogue/Accessories/Accessories-File/Vitodens-050-W-Valve-fittings-cover-for-device-width-400mm-ZK06090 Accessories