Werner D7120-2 375-Pound Duty Rating Fiberglass Round Rung Extension Ladder, 20-Foot 20-foot ladder extends a working height of 17-feet Durable rail shield and shoe bracket protects rail from damage and shoe with slip-resistant pad and spur plate Base and fly separate easily to use base section as single ladder Slip Resistant Traction-Tred D-rungs Plate and rung assembly are riveted at four points to allow for rung replacement