GST  HOME > Product > Telescope Ladder > GSL   Aluminum Telescope Ladder    Multi purpose ladder that can be used for 5 way in 1  Newest TOPAM allows to work on the highst rung or step with handrail  Excellent operation of steel hinge, durable and easy handling  Optional outrigger can be attached to prevent falling of ladder  Meets or exceeds EN-131 and ANSI safety standards   Model Step Height Extension Height Scaffold Height Straight Height GST-13 3' to 5' 7' to 11' 1' to 2' 13' GST-17 4' to 7' 9' to 15' 1' to 3' 17' GST-21 5' to 9' 11' to 19' 1' to 4' 21' GST-25 6' to 11' 13' to 23' 1' to 5' 25 * Tool tray and outriggers are optional.