The D6028-2 28ft fiberglass extension ladder has non-conductive side rails and a duty rating of 250 pounds. The TRACTION-TRED® D rungs are slip resistant and the side rails are interlocking. The rail shields protect the bottom of the rail and the SHU-LOK® shoe pivots easily for use on hard or penetrable surfaces. The exclusive ALFLO® rung joint guarantees TWIST-PROOF® performance. Exclusive ALFLO® rung joint means TWIST-PROOF® performance 1½" slip-resistant TRACTION-TRED® D-rungs Smooth operating pulley w/polypropylene rope Interlocking Side Rails with internal rail guides on bottom of fly section securely connect rails Durable extruded rung locks are spring loaded to operate smoothly External guides at top of base section securely interlock rails Combination rail shield bracket and shoe with SHU-LOK® and slip-resistant pad Internal guides on bottom of fly section securely interlock rails Molded rung braces on bottom step for increases durability Mar-resistant end caps