... 40000hoursHousing MaterialAluminum Alloy + 4mm LGP + PMMANet Weight5kgAdvantages-light panel:Wide indoor applications: commercial lighting, office lighting, hospital lighting ... .Excellent heat dissipation,with T7075 aluminum frames6. Using high luminous efficient light guide plate ,which improves the ... , office lighting, hospital lighting, school lighting, etc. High brightness 40W 600x600 light panel