Ugello d'aria MB 924 (BNR 21 / BNR 110) con anello adattatore e viti

Air nozzle MB 924 (BNR 21 / BNR 110) with adapter ring and screws — a kit for BNR 21 and BNR 110 series gas burners. The nozzle forms the air flow necessary for proper mixture formation. The set includes an adapter ring and mounting screws, ensuring complete readiness for installation. This part is often required when repairing or adjusting a burner device. Used in heating systems requiring high reliability.