Lighting confined production spaces such as industrial installations makes particularly high demands of luminaires in terms of their light quality, casing dimensions and resistance to hazardous substances. Modern LED luminaires such as the TUBELED series from LED2WORK provide the efficient, cost-effective solution. In May this year, the TUBELED_40 and TUBELED_70 (24 V DC) models were accredited with the ETL seal of approval for the North American market.