The LED Corn Lamps offered by Straits Lighting are ideal replacements for applications traditionally using metal halide, sodium lamps and CFL bulbs. These bulbs offer excellent durability, shatterproof construction and excellent energy efficiency. Built with high efficiency LED chips and a highly effective heat dissipation system, these bulbs are ideal for both exposed and enclosed fixtures. Features Advanced Thermal Management Matte aluminum finish with white polycarbonate base Minimum operating temperature: -4°F (-20°C) Maximum operating temperature: 149°F (65°C) Specifications Weight 1.6 lbs Dimensions 8.07 × 3.66 × 3.66 in Watts 27W Lumens 3456 Kelvin Temp 5000K Efficacy 128 Rated Life Hours 50,000 hour rated life Length 8.07'' Replacement 70W HID Minimum Temperature -20°C Maximum Temperature 65°C Diameter 3.66 Total Harmonic Distortion THD < 20% Mount Mogul base Beam Angle 360° Driver Internal Driver Case-Quantity 12 Base E39/Mogul base Size 8.07 x 3.66 x 3.66 Lens Description Clear Lens Individual Brand Series LED Corn Lamp Brand-Series Beam 360 Power Factor > .9 Dimming Non-Dimmable Certifications DLC, IP60, RoHS, UL