World's Greatest Multi-Position 21 Ft. Ladder (Aluminum) Item # 20421T1ASE

$299.99 *The price stated above is the MSRP (Manufacturer's suggested retail price). Prices may vary among retailers.

  • STABLE - Flared legs with slip-resistant feet for stability.
  • MULTI-FUNCTION - Designed for multiple uses inside and out.
  • STRONG - Box "I" beam is aluminum for added strength.
  • LOCKS - Positive locking hinges.
  • DOUBLE-SIDED - Can be climbed on both sides as a step ladder.
  • HEAVY DUTY - Meets ANSI Type 1A Extra Heavy Duty Industrial Workload 300 lb rating.
  • SIMPLE - No assembly required.
  • MULTIPLE POSITIONS - 5 positions as a step ladder 10 heights as an extension ladder 9 positions as a stairway ladder 3 heights as a scaffold 4 heights as a wall ladder
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Usage Grade
Usage Intérieur
Usage Extérieur
Warranty 10 Year Limited

Designed for multiple uses inside and out. Box "I" beam aluminum allows for added strength. Flared legs have slip-resistant feet for stability. Positive locking hinges. This model can be climbed on from both sides as a step ladder. Meets ANSI Type 1A Extra Heavy Duty Industrial Workload with a 300 lb rating. No assembly is required. Life is a story: a collection of moments, told one memory at a time, shared with people we love. And for over 80 years, COSCO has been proud to be part of that story, offering products that improve and simplify your everyday life. Whether you are moving, painting, redecorating, hosting guests, or simply relaxing outdoors, we have you covered. As life unfolds, we will continue to deliver products with practical and innovative designs. It’s our promise to you. COSCO. Smart. By Design.

Model 20421T1ASE
Height 227.56"
Width 27.17"
Depth 4.92"
Weight 41.8 lbs

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