The D1532-2 aluminum extension ladders have a duty rating of 300 lbs and have extra heavy duty I-beam side rails. The base and fly sections separate easily and can be used separately. Guide brackets help to ease operation when raising and lowering the fly section. The exclusive ALFLO® rung joint means TWIST-PROOF® performance every time. TRACTION-TRED® D rungs are slip resistant, and the rugged shoes rest flat or are held in spur position with the SHU-LOK® feature. Rugged spring-loaded locks operate smoothly. Mar-resistant end caps protect the surface ladder is resting against.

The D528-2 28 ft aluminum extension ladders have a duty rating of 375 pounds and feature the exclusive ALFLO® rung joint for a TWIST-PROOF® performance every time. The end caps are mar resistant and notched for easy separation of sections. Both the base and the fly sections can be used separately. Internal guides increase the ease of operation when raising and lowering. The feet are heavy-duty, self-aligning and free swinging for hard or penetrable surfaces. Rugged spring-loaded locks operate smoothly. TRACTION-TRED® D rungs are slip resistant. Duty rating changes to 300 pounds for 36 ft-48 ft models.