18 Foot Aluminum Square Straight Direct Burial 5in .188 Thickness

18' Square Straight Aluminum Direct Burial Pole, 22' Overall Length, 5" Square. The ALS-ASQS-5183-DB is an 18-foot square straight aluminum light pole designed for direct burial (DB) installation. Instead of using an anchor base and bolt circle, this pole is set directly into the ground (with embedment/backfill and/or concrete per local practice), making it a practical choice for projects that want a clean look and simplified foundation work—especially for smaller site lighting where an anchor base isn’t required. At 18' mounting height, this pole moves into a more typical small site / light parking height range, where additional mounting height can improve spacing and uniformity for drive lanes, perimeter lighting, and compact parking areas. The 5" square shaft provides a larger section than 4" square poles, which is often helpful when fixture/bracket loads or wind exposure increase. Because this is a direct burial pole, the overall length is longer than the mounting height to provide the below-grade embedment needed for stability. This model has a 22' overall length, allowing for typical installation depth while maintaining the specified mounting height above grade. For wind-load planning, it is rated at 2.9 EPA @ 120 mph—confirm the combined projected area of the luminaire, bracket/arm, and any accessories stays within the pole’s EPA rating and verify embedment depth and soil conditions per local requirements.