The D7124-2 extension ladder boasts a duty rating of 375 pounds and features the exclusive ALFLO® rung joint that guarantees TWIST-PROOF® performance. External guides at top of base section help secure the interlocking side rails. Pre-pierced holes at the top of the fly section allow for easy field installation of accessories. The plate and rung assembly are riveted at four points to each side rail. The TRACTION-TRED® D-rungs are slip resistant and the durable rail shield and shoe bracket protects the rail from damage.