... °C-50°CLifespan>40000hoursHousing MaterialAluminum Alloy + 4mm LGP + PMMANet Weight5kgAdvantages-light panel:Wide indoor applications: commercial lighting, office lighting, hospital lighting ... high luminous efficient light guide plate ,which improves the brightness. Installation: Commercial lighting, office lighting, hospital lighting, school lighting, etc. High brightness 40W 600x600 light panel ...