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Product Details
The UnderCover Flex folding tonneau cover fits the 6-foot 10-inch bed of 2017-2026 Ford F-250. FRP composite panels fold on built-in prop rods that hold the cover open for driving, and rubber seals and drain tubes channel water out of the bed.
Part number: FX21021
UnderCover hard folding tonneau cover.
Hard folding covers use rigid panels that fold forward in sections and can usually be driven with the panels stacked.
Use the vehicle selector to confirm your exact year and configuration.
Confirm this fits your vehicle. Use the “Check Fit” selector, or see the Vehicle Compatibility list below for the years, makes and models listed.
Specifications
Manufacturer data for this part — all visible, no tabs to dig through.
| Brand | UnderCover |
| Part number | FX21021 |
| Shipping carton | 82 × 32 × 8 in (208 × 81 × 20 cm) |
| Shipping weight | 31.8 kg (70 lb) |
| Category | Truck Bed & Tonneau |
Related guides
Do You Need a Bed Liner Under a Tonneau Cover?A tonneau cover keeps weather off your cargo but not your cargo off the bed. Here is when you need a mat or liner underneath, and how to check that...Tonneau Covers in Canada: How to ChooseHow soft roll-up, folding, hard folding and retractable tonneau covers differ, what to check on your bed first, and examples from TruXedo, Extang, ...
All guides →
UnderCover Tonneau Cover — 2017-2026 Fo...
FX21021
Complete the build
More parts for the 2023-2026 Ford F-250/F-350 Super Duty. Untick anything you don’t need.
$1,749.99
$741.99
$981.47
Total for all 3
$3,473.45
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Outstanding Customer Service!
Excellent shopping experience with MapleTorque! Alex was incredibly responsive, friendly, and genuinely committed to customer satisfaction. He personally helped me with pricing, made the purchase process easy, and even followed up after ...
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