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Calculate Lighting Fixture Beam Angle Calculate Illumination at Surface from Beam Angle. Calculate Lighting Fixture Lumen from Beam Angle. Calculate Illuminated Diameter from Beam Angle.
 Calculate Lighting Fixture Beam Angle-UNLOCK (1.8.23)&caption=undefined&description=<p>Calculate Lighting Fixture Beam Angle Calculate Illumination at Surface from Beam Angle. Calculate Lighting Fixture Lumen from Beam Angle. Calculate Illuminated Diameter from Beam Angle.</p>&redirect_uri=http://www.facebook.com){kind=link}