Cotterman (Rolling) Ladder with CAL OSHA Rail Kit - 60in. Max. Height, Model Number 1006R2630A1E10B4COC1P6 - Scaffolding Equipment - Amazon.com
COTTERMAN Rolling Ladder: 50 in Platform Ht, 10 in Platform Dp, 24 in Platform Wd, Perforated, 30 in Bottom Wd - 3UU74|1505R2630A6E10B4W4C1P6 - Grainger
Cotterman SAS3A6 | Steel 3-Step Stock-N-Store Rolling Folding Ladder | 30 In. Top Step Height | 60 In. Overall Height | A6 Perforated Tread - Industrial Ladder & Supply Co., Inc.