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Cosco SmartClose 8.5 ft. Aluminum Telescoping Extension Ladder, 12 ft. Reach Height, Load Capacity 300 lbs., ANSI Type 1A 20809T1ASE - The Home Depot
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Telescoping Extension Ladder 12.5FT, Aluminum Telescopic Ladders with Carry Bag for Outdoor Indoor Use
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How do I calculate the length of a ladder I need to reach a certain height? - Home Improvement Stack Exchange
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