The 28ft AERO Lightweight Fiberglass Extension Ladder Model B7128-2X9295 boasts a duty rating of 375lb and features exclusive BOXLOK™ Interlocking rail technology and a factory installed leveler and bracket support kit. The patented box rail design provides the ultimate climbing experience reducing bounce, twist, and side sway compared to other lightweight ladders on the market. The AERO Lightweight Extension Ladder is 25% lighter than our standard 375lb rated ladder increasing productivity and reducing fatigue. The Traction-Tred® tri-rungs are slip-resistant and provide a wide flat standing surface. Fiberglass rails are non-conductive for working near electricity. This ladder is ideal for utility or telecommunication industries.