TECHNICAL GUIDE
BUG Ratings Explained: Backlight, Uplight & Glare in Outdoor Lighting
What BUG Ratings Tell You About Outdoor Lighting A parking lot luminaire may carry a favorable BUG rating yet still create unwanted...
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The RAB Lighting A34L-XL-HSS is a house-side shield designed to control light distribution on large and extra-large A34 area lights. This accessory mounts directly to compatible A34 fixtures to block backlight spillage toward building façades, neighboring properties, and other sensitive directions, helping operators meet dark-sky ordinances and reduce light trespass in environmentally or residentially constrained locations.
The shield's robust construction integrates seamlessly with A34 area light housings without modifying the fixture's electrical performance, wattage, or control capabilities. Its engineered design maintains illumination efficiency in the forward direction while substantially reducing unwanted light scatter behind the mounting plane. The shield is compatible specifically with large and extra-large A34 frame sizes; verify your fixture's model and dimension before ordering to ensure proper alignment and secure installation.
This accessory is essential for commercial properties, industrial sites, and outdoor installations subject to lighting ordinances that restrict boundary light or sky glow. Warehouses, manufacturing facilities, parking areas, and exterior building perimeters often benefit from directional light control, particularly when fixtures are positioned near property lines, roadways, or adjacent residential zones. The shield allows facility managers and specifiers to deploy powerful A34 area lights while maintaining responsible lighting practices and regulatory compliance.
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TECHNICAL GUIDE
What BUG Ratings Tell You About Outdoor Lighting A parking lot luminaire may carry a favorable BUG rating yet still create unwanted...
Read Technical Guide