From Eterna this is a 5 Foot LED high output economy batten fitting comprised of a pressed steel body with a polycarbonate diffuser a removable LED tray 20mm knockout glands at each end and a BESA mounting box. This 48 Watt model provides a Cool White (4000 Kelvin) 4000 Lumen light output and has a durability proven by its 30000 hour lifespan and 3 year warranty.