The D1116-2 aluminum 16 feet extension ladder is lightweight yet has a duty rating of 200 lbs. The Traction-Tred D rungs are slip resistant. Spring-loaded locks operate smoothly for easy operation. Pivoting shoes with slip-resistant foot pads. Mar-resistant end caps help protect the surface the ladder is leaning against. Exclusive Alflo rung joint means Twist-Proof performance every time. Exclusive Alflo rung joint means Twist-Proof performance1-1/2 inch slip-resistant Traction-Tred D-rungsDurable extruded double rung locks are spring loaded to operate smoothlyMar-resistant end capsModified I-beam side rails to optimize strength and weightPivoting shoe with slip-resistant pad