Werner D524-2 375-Pound Duty Rating Type 1AA Aluminum D-Rung Extension Ladder, 24-Foot 24-foot ladder extends a working height of 21-feet Base and fly separate easily for use as an extension or two single sections Mar-resistant end caps notched for easy separation of sections and molded slip-resistant shoes for use as a single section Slip-resistant Traction-Tred D-rungs Exclusive Alflo rung joint means Twist-Proof performance