The Equalizer D1720-2EQ Aluminum 20ft Extension Ladder eliminates uneven ground with the factory installed adjustable EverLevel leveling system. This system precisely adjusts in 3/8in increments up to 8 1/4in, making it easy to use. The dual action feet on the ladder are for use on hard or penetrable surfaces and swivel easily. The Traction-Tred D-rungs are slip-resistant. The ladder has a duty rating of 225lb making it durable, long lasting and able to meet the demands of the job. The exclusive Alflo rung joint means a Twist-Proof performance every time, and the lightweight aluminum makes it easy to transport.