Product Description 
The 4028 aluminum 28' extension ladder has a duty rating of 250 pounds and heavy duty modified I-beam side rails. The D-rungs are slip resistant and the side rails are interlocking. Heavy duty spring-loaded locks operate smoothly. Durable shoes rest flat or are held in spur position. Mar-resistant end caps help protect the surface ladder is leaning against.
- Mar-resistant end caps
- End closures offer user protection from sharp ladder ends
- Poly rope with directional pulley for easier action
- Black non-continuous rope
- Full interlocking modified I-beam style rails
- Spring activated double rung locks
- Slip-resistant D-rungs
- Durable shoe rests flat or is held in spur position
Dimensions: 28'
Vendor: Keller
Product Specifications 
| Approximate Cubic Footage: 9.8 |
Rung Dimension: 1-5/8 in |
| Reach Height: 28 ft |
Rails Dimension: 3 in |
| Material: Aluminum |
Load Capacity: 250 lbs |
| Flange Dimension: 1-1/16 in |
Certification: ANSI A14.2 (2007); OSHA |
| Base Width: 17-3/8 in |
Approximate Shipping Weight: 50 lbs |
| Duty Rating: I |
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Required Accessories 
Required Accessories 
Optional Accessories 
Optional Accessories 
Please Note: Prices, promotions, styles and availability may vary by store and online. While we do our best to provide accurate item availability information, we cannot guarantee in-stock status and availability as item quantities are constantly changing throughout the day. Inventory last updated 5/19/2013 at 5:00am CT. Rebates are an in-store service; therefore online purchases do not qualify towards rebate redemption.