description 6.5ft extension for tele-tower the 1177 extension is built on top of the tele-tower model 1101 and adds 6.5 ft to the height. with the extension installed the 1101 will adjust from 12.5 ft to 17.5 ft in deck heights. california proposition 65 warning. features easy to assemble increases the height range of the tele-tower secure and stable adjustable with the tele-tower winch from 12.5 ft to 17.5 ft made in the usa specifications acme tools brand name telpro acme tools part number 1177 adjustable yes ansi approved yes ansi ladder rating not rated assembled weight (lbs) 98 base width (in) 22.5 california proposition 65 warning required yes casters no country of origin united states duty rating (lbs) 550 globaltradeitemnumber (gtin) 00743913011779 hand crank yes interchangeable parts yes internal supplier part # 1177 internet product code (ipc) 38624da5a3b jack mechanism na ladder length (ft) 6 ladder material steel ladder type scaffold manufacturer warranty limited 1 year material steel maximum load (lbs) 550 meets ansi or osha standards yes osha approved yes package weight 180 package weight (lbs) 180 pump jack mechanism na rail material steel rung/step depth (in) 2 rung/step material steel scaffolding type scaffold accessories self locking no upc 743913011779 weather resistance no weather resistant no