QUICKLATCH equipped runglock provides easier method of securing fly base sections when extended. 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 3â³ 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: 3â³ rail depth, 5-1/4â³ stack height, 15-1/4â³ base inside, 14-5/16â³ fly inside, 17-1/8â³ base outside and 16-3/16â³ fly outside. AE4216PG does not include rope & pulley.