300mm Beacon FAA Type L-864by TWR Lighting Inc.Features Very low power consumption, reduces power needs by 96% over today's obstruction lights FAA Approved Extremely reliable with a 5 year warranty. Specifications Intensity Medium Horizontal Coverage 360° Lamp Description 2 x 620Watt or 700Watt Lamps Vertical Beam 10° Minimum Effective Candelas 2000 +/- 20% Flashhead Height 30.5" (77.47 cm) Flashhead Diameter 16.5" (41.91 cm) Flashhead Lens Material Fresnel Pyrex Glas Flashhead Base Material Valox™ Power Requirements 120V / 240V AC 50Hz or 60Hz Weight 68lbs. (30.9 kg) Operating Temperature -55°C to +55°C Wind Load CAAA 1.6 ft² Mounting Holes 4- 11/16" Spaced 90° on 13.25" (30.65 cm) Bolt circle