SFB-32 Surface Mounted 32w Luminaire Housing High quality cold-rolled steel sheet of thickness 0.6 (T6) or 0.8mm (T8) Reflector 99.85% high purity anodized aluminium reflector with Total Reflectance of 87% (87) mirror finished (DIN 5036-2) for normal usage. Diffuser high quality acrylic diffuser with steel painted frame. Four acrylic diffusers are available : Prismatic (P) , Opal (M) , Stipple (O) and Clear (J) Lamp Holder Heavy duty lamp holder (TIS.344-1987 Standard) IP Rating IP20