Ford's 8' Super Duty box is the one that punishes every other kind of cover: a folding cover leaves a stack of panels eating the front of it, and a roll-up has to be strapped somewhere once it is off. The M-Series retracts into a canister at the bulkhead instead, so the long bed goes from locked to wide open without anything leaving the truck.
The deck is aluminum slats under a one-piece industrial vinyl skin, travelling on side rails that clamp to the bed. A torsion spring carries its weight forward, a patented ratchet stops it at three points along the rails, and a keyed twist latch sits behind a hinged weather cap at the rear edge.
LG119M is the long-box part for the 2008-2016 F-250 and F-350. The 6'10" short box on the same trucks takes LG109M, and the two are cut to different lengths, so check which box you have before ordering. The tailgate extrusion ties the cover and the tailgate together: neither opens while the other is locked.
What's Included:
- Cover and canister housing with lid
- Driver and passenger side tracks
- Cargo shield
- Two drain tubes
- Bed clamps and the full fastener kit
- Tailgate extrusion
- Pull strap
- 303 vinyl protectant
- Vehicle-specific installation sheet
Features
Locks With Your Tailgate
Roll-N-Lock builds a tailgate extrusion into the rear of the cover. With the cover closed and latched, the tailgate cannot be dropped, so the bed is closed off by the cover and the tailgate together rather than by the cover alone.
Three Latching Positions
A patented ratchet-style latching mechanism holds the deck at three points along its travel. Haul something tall and you can leave the cover part way back and still lock it there, instead of choosing between fully covered and fully open.
Weatherproof Key Cover
The keyed twist latch sits behind a hinged cover over the key slot. It is a small part that solves a real winter problem: rain and snow stay out of the cylinder, so the lock does not freeze shut overnight.
Drains Through the Rails, Not Onto Your Gear
The one-piece vinyl top sheds the weather, and integrated channels and drain tubes route anything that gets past the seal down through the rails and out under the truck.
Vinyl Over Aluminum Slats
Aluminum slats carry the load and the structure; an industrial-grade vinyl skin is laid over the top. You get the flat, seamless look of a soft cover with a hard deck underneath it.
Clamps On, No Holes in the Truck
The rails clamp to the bed rails with the included hardware and the canister sits against the bulkhead. Nothing is drilled into the truck itself. If your bed has a drop-in plastic liner, that liner does have to be trimmed and drilled to clear the canister and the drain tubes, and Roll-N-Lock gives the cut measurements in the sheet.
Fitment & Compatibility
Ford
| Years |
Model |
Bed |
Notes |
| 2008-2016 |
F-250 |
8' |
— |
| 2008-2016 |
F-350 |
8' |
— |
Fit guidance: Fits the 2008-2016 Ford F-250 and F-350, with the 8' bed. Roll-N-Lock lists this box by name rather than by a measurement, so no inch figure is published here. Sibling part numbers for the other bed lengths in this family: 6'10" → LG109M (2008-2016). Where a truck was offered with more than one box, measure yours from the bulkhead to the inside face of the closed tailgate before ordering.
Specifications
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Series: Roll-N-Lock M-Series
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Cover type: Manual retractable
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Material: Industrial-grade vinyl over aluminum slats
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Finish: Matte black
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Operation: Keyed twist latch, torsion-spring drive
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Latching positions: 3, ratchet-style
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Canister depth: 7.25"
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Tailgate locking: Built-in tailgate extrusion
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Drainage: Integrated channels and drain tubes
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Mounting: Clamp-on, no drilling into the vehicle
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Warranty: 3-year limited
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Country of origin: Assembled in Florida from US and global materials
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Fits: the 2008-2016 Ford F-250 and F-350
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Bed length: 8'
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Part number: LG119M
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UPC: 725478163124
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Shipping weight (packaged): 105 lb
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Shipping carton: 74" × 14" × 14"
Installation
Type: Clamp-on, nothing drilled into the truck · Hardware: Included
The side tracks fix to the Ford Super Duty's bed rails with the supplied hardware and the canister housing sits against the bulkhead at the front of the bed. No holes go into the truck itself.
Roll-N-Lock's sheet for this application is a scanned document with no extractable text, so we are not quoting track spacing or torque figures from it. Work from the printed sheet in your box. Keep the drain tubes clear of the cab vents. Roll-N-Lock does not publish an installation time for this cover, so we are not going to quote one.
Resources
Everything Roll-N-Lock publishes for this cover, in one place.
Warranty, Shipping & Returns
Warranty. Roll-N-Lock covers the M-Series with a three (3) year limited warranty to the original purchaser against defects in material and workmanship. The warranty is not transferable. Roll-N-Lock states plainly that it does not warrant against water intrusion, including leaks in normal use, so treat this as a water-resistant cover rather than a sealed one.
Three things in the warranty conditions that catch people out. Never spray lubricant into the tracks, silicone or petroleum based especially, because it attracts grit and Roll-N-Lock voids the warranty for it. Clear snow and ice off the cover before you open it. And if the truck is ever towed from the rear, the cover has to come off first. Clean with mild automotive soap and water only.
Free shipping. This cover ships free to the lower 48 states. It travels as an oversized parcel rather than a freight shipment.
Inspect on delivery. The cover arrives in a long, flat carton that takes the knocks before anything inside does. Check the packaging when it arrives, and if you see damage, note it on the delivery paperwork and contact us straight away so we can put it right.
Compliance. Country of origin: USA. Roll-N-Lock assembles the M-Series in Pompano Beach, Florida from US and global materials. California residents: Proposition 65 warning for cancer and reproductive harm.
Returns. Unused items in their original packaging can be returned within 30 days of delivery. If an item arrives damaged, defective or wrong, return shipping is on us. See our Returns & Refunds Policy, or email support@prestigetruck.com with any question.
About Roll-N-Lock

Roll-N-Lock builds retractable truck bed covers and cargo management hardware at its plant in Pompano Beach, Florida, and is part of the RealTruck group of truck accessory brands. Every cover is assembled in Florida from US and global materials and is backed by a three-year limited warranty to the original purchaser, or five years on the electric E-Series.
The M-Series is the vinyl-topped member of the Roll-N-Lock line. Aluminum slats carry the load and an industrial-grade vinyl skin gives it the flat, seamless look of a soft cover. Step up to the all-aluminum A-Series for a harder wearing deck, add MaxTrak T-slot rails with the M-Series XT or A-Series XT, or move to the key-fob-operated E-Series.
Every Roll-N-Lock cover shares the same mechanism: a torsion-spring drive, a patented theft-resistant hinge between the slats, a keyed twist latch behind a weatherproof key-slot cover, and a tailgate extrusion that stops the tailgate opening while the cover is closed. The deck retracts into a canister at the bulkhead and locks there rather than stowing loose in the bed.
Prestige Truck is an authorized Roll-N-Lock dealer. Every cover we ship is new, in the factory carton, and covered by Roll-N-Lock's warranty direct from the manufacturer.