WERNER D1320-2 Extension Ladder, 19 ft H Reach, 250 lb, Aluminum The D1320-2 aluminum 20 ft extension ladder has a duty rating of 250 lb and heavy-duty modified I-beam side rails. The TRACTION-TRED® D-rungs are slip resistant and the side rails are interlocking. Heavy-duty, spring-loaded locks operate smoothly. Durable shoes rest flat or are held in spur position with SHU-LOK® feature. Mar-resistant end caps help protect the surface ladder is leaning against. Exclusive ALFLO® rung joint means TWIST-PROOF® performance every time. • Adjustable Increments: 12 in • Base Width: 17-3/8 in • Bottom Width: 17-1/2 in • Closed Width: 10 ft • Duty Rating: Type I • Extension Length: 17 ft • Flange Dimensions: 1-1/16 in • Fly Width: 15-1/4 in • Foot Material: Slip-Resistant Pad • Includes: End-caps Rope and Pulley • Length: 132.0 in • Material: Aluminum • Number of Rungs: 20 • Number of Sections: 2 • Open Volume: 7.2 cu-ft • Rail Depth: 3 in • Rail Type: I-Beam • Reach Height: 19 ft • Rung Size: 1-3/4 in • Rung Type: D-Shaped • Section Length: 10 ft • Size: 20 ft • Tread Type: Traction • Weight Capacity: 250 lb • Work Area: 17 ft • Exclusive ALFLO rung joint means TWIST-PROOF performance • 1-3/4 in slip-resistant TRACTION-TRED D-rungs • Heavy-duty extruded rung locks are spring loaded to operate smoothly • Smooth operating pulley with polypropylene rope • Heavy-duty modified I-beam side rails • Durable shoe rests flat on slip-resistant pad or is held in spur position with SHU-LOK feature