QUICKLATCH equipped runglock provides easier method of securing fly base sections when extended. Heavy-duty plated steel swivel safety shoes with thick rubber tread. Shoe can be used with tread down or in spike position. Tempered, serrated aluminum D-shaped rungs provide for a slip-resistant surface. Side rails are full 3" extrusions shaped into a modified I-beam for strength and light weight. Interlocking rails keep fly and base sections from coming apart. Meets or exceeds the safety standards set by ANSI and OSHA. ProGrip- integrated surface protector with non-marring, slip resistant pads and hand grips. Dimensions: 3" rail depth, 5-1/4" stack height, 15-1/4" base inside, 14-5/16" fly inside, 17-1/8" base outside and 16-3/16" fly outside.