description werner aero extension ladder 28' iaa fg box rail/tri rung cable hook v rung the 28ft aero lightweight fiberglass extension ladder model b7128-2x9085 boasts a duty rating of 375lb and features exclusive boxlock鈩?interlocking rail technology and a factory installed cabel hook / v-rung for aerial work on strands and poles up to 10in. 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庐 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. california proposition 65 warning. features lightweight - 25% lighter than standard 375lb extension ladders boxlock鈩?interlocking rail system reduces deflection, twist and sway for a more confident climbing experience. solid feel = more confidence reduced bounce, twist and sway combined with wide rungs for premium climbing comfort. 19鈥?wide clear width for stability cable hook is lightweight but heavy duty, rated for 375lb. service. hooks stow when not in use. features a slip resistant rubberized v-rung that works with poles up to 10" diameter 1.625 inch slip-resistant traction-tred庐 tri-rungs rugged, heavy-duty extruded rung locks are spring-loaded to operate smoothly durable rail shield and shoe bracket protects rail from damage specifications acme tools brand name werner acme tools part number b7128-2x9085 ansi ladder rating type iaa assembled weight (lbs) 54.1 base spread (in) 18.5 base width (in) 18.5 country of origin mexico duty rating (lbs) 375.0 globaltradeitemnumber (gtin) 00051751144321 ladder length (ft) 28 ladder material fiberglass / aluminum ladder type extension package contents 28ft aero type iaa fiberglass box rail/tri-rung extension ladder b7128-2 package depth 336 package height 3.5 package weight 54.1 rung/step depth (in) 1.625 rung/step material aluminum telescoping no upc 051751144321 weather resistance yes weather resistant yes