T5 2x28W fluorescent lamp with PMMA or PC diffuser.Body is made of steel with white powder coated,under the treatment of rust,oil removed and rustproof.Diffuser is made of Opal PC or PMMA , transparent PC or clear PMMA material .Ballast: high frequency electronic ballast.Application:conference room,office,waiting hall,depature lounge,shopping mall,school,showroom,hospital and other indoor places.