WERNER, 20 ft Industry Ladder Size, 17 ft Extended Ladder Ht, Extension Ladder - 41D317|D520-2 - Grainger
20FT TYPE I ALUMINUM D-RUNG EXTENSION LADDER - Modern Electrical Supplies Ltd
DMLZB Telescopic Ladder 20 FT Aluminum Telescoping Ladder, One-Button Retraction Extension Extendable With Spring Loaded Locking for Household Outdoor ...