Weather Guard 126-3-03 steel crossover saddle truck tool box in brite white, front three-quarter studio view

Weather Guard 126 Steel Crossover Truck Tool Box, Full-Size Standard, Brite White (126-3-03)

$1,099.00 $1,175.99 Save $76.99
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  • No Sales TaxZero sales tax on every order
  • 30-Day Money-Back GuaranteeReturn it within 30 days of delivery for a refund
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Features

  • High-security push-button lock: A One Key high-security push-button lock guards the lid, and the keyed cylinder can be coded so several boxes share one key.
  • Full-perimeter weather seal: A D-shaped, multi-ridge weather strip circles the whole lid to keep water, dust and debris away from your gear.
  • Reinforced lid, gas struts: Gas struts lift the reinforced lid and hold it near 90 degrees, and welded shields protect the struts from knocks.
  • Saddle fit across the bed: The box rides on both bed rails right behind the cab, so the bed floor below stays open for long material.
  • Heavy-duty build: Each body is welded aluminum or heavy-duty formed steel, depending on the part, with a reinforced front.
  • ARMOR TUF powder coat: Weather Guard finishes these boxes in ARMOR TUF powder coat, in brite white, gloss black, textured matte black or clear over bright aluminum.

Description & Fitment

Weather Guard builds the 126-3-03 as a full-size standard saddle box: steel under white ARMOR TUF powder coat. It measures 72" L x 20" W x 18" H and holds 10.6 ft³, at about 131 lb shipping on Weather Guard's spec sheet. Choose it if you want the -03 One Key lock with PowerSync-ready access; the -04 line moved to 1Key UltraLock.

Fitment & Compatibility

Chevrolet
Years Model Bed Notes
1999-2027 Silverado 1500 —
2001-2027 Silverado 2500 HD —
2001-2027 Silverado 3500 HD —
Ford
Years Model Bed Notes
1997-2027 F-150 —
2022-2027 F-150 Lightning —
1999-2027 F-250 Super Duty —
1999-2027 F-350 Super Duty —
1999-2027 F-450 Super Duty —
GMC
Years Model Bed Notes
1999-2027 Sierra 1500 —
2001-2027 Sierra 2500 HD —
2001-2027 Sierra 3500 HD —
Nissan
Years Model Bed Notes
2004-2024 Titan —
2016-2024 Titan XD —
Ram
Years Model Bed Notes
2011-2027 1500 —
2019-2024 1500 Classic —
2011-2027 2500 —
2011-2027 3500 —
Toyota
Years Model Bed Notes
2000-2027 Tundra —

Check your fit: a full-size pickup crossover box measuring 72" L x 20" W x 18" H. It sits across the bed rails, so measure your bed rail to rail and check the vehicle list in Fitment to confirm.

Not for: mid-size pickups (Weather Guard's 62" mid-size 131, 137, 154 and 156 boxes are sized for them). Other 126 parts: 126-3-04, 126-5-03, 126-5-04. Not included: zinc-rich primer, which Weather Guard calls for on any holes drilled into an aluminum bed.

About Weather Guard

WEATHER GUARD.

Weather Guard is the truck and van storage brand of Werner Co., the Illinois company also known for its ladders. Its tool boxes are built in the USA, and the line runs from crossover, Lo-Side and gull-wing boxes to chests, underbody boxes, bed drawers, transfer tanks, ladder racks and van shelving.

Weather Guard's current boxes use the 1Key UltraLock, a red push-button lock you can code so one key opens every box on a truck or across a fleet, and many are finished in ARMOR TUF powder coat.

Buying Weather Guard from Prestige Truck. Weather Guard asks for the original sales receipt with any warranty claim, so keep your Prestige Truck order receipt with your records.

Frequently Asked Questions

How do I check it fits my truck?

Measure across your bed rails. This box measures 72" L x 20" W x 18" H; compare that length with your bed's outside width at the rails, and check the vehicle list in Fitment.

Will it fit my Colorado or Ranger?

No. This is a 72" full-size box. For mid-size beds, Weather Guard makes 62" crossover boxes such as the 131, 137, 154 and 156.

How does this differ from the -04 box?

The -03 is the previous generation, with the One Key push-button lock and PowerSync-ready access. The current -04 boxes use the 1Key UltraLock instead. Both mount across the rails with the same clamp method on Weather Guard's saddle and cross box manual.

What is PowerSync?

PowerSync is Weather Guard's accessory system for box lighting and remote keyless entry. This box is ready for it; the accessories are sold separately.

Do I have to drill my truck bed?

Usually not. Four clamps hold the box to the rails, and eight slots let you place them around your bed's shape. Through-bolts or J-bolts in an aluminum bed need their holes coated with zinc-rich primer, which is not included.

What if I lose the key?

Record your key code when the box arrives. Weather Guard's manual says there is no way to work the code out later, so the record is what lets you order a replacement key.

Installation

Install time Not printed on Weather Guard's install sheet
DifficultyNot printed on Weather Guard's install sheet
TypeCrossover mount on top of both bed rails with four mounting clamps, carriage bolts and fender washers (Weather Guard saddle and cross box manual)
Tools1/2" ratchet wrench and a ruler

Here's the short version. Follow Weather Guard's install sheet (below) for the exact positions and hardware.

  1. Code the locks with the supplied keys before first use. Once a lock is coded it cannot be changed, so decide whether all your boxes share one key.
  2. With the truck parked on level ground, set the box on the bed rails and center it with a ruler. Check the cover opens fully without hitting the cab.
  3. Fit a mounting clamp, carriage bolt and fender washer in four of the eight slots, starting at the driver-side front and working clockwise.
  4. The cover may not latch until all four clamps are tight, so finish bolting before you test it.
  5. On an aluminum bed, use the aluminum upfit parts. Prime any drilled holes with zinc-rich primer.
  6. Check the clamps for tightness from time to time.
Install videos

Stuck on a step? Ask our install experts

Specifications

BrandWeather Guard
Part Number126-3-03
GenerationPrevious generation (-03)
Box typeCrossover (saddle) box, single lid
LockOne Key push-button high-security lock, PowerSync capable
Weather sealFull-perimeter D-shaped, multi-ridge
LidReinforced, gas struts with welded strut shields
Electrical12V PowerSync-compatible access
MountingAcross both bed rails with four clamps
Country of originUSA
Series126 Series crossover (saddle) box
Sizefull-size standard
MaterialSteel
FinishBrite White ARMOR TUF powder coat
Exterior dimensions72" L x 20" W x 18" H
Capacity10.6 ft³
Shipping weight131 lb
WarrantyWeather Guard Limited Lifetime
UPC783965056458

More media

4 videos

Warranty, shipping & returns

  • Warranty

    Weather Guard backs this box with its Limited Lifetime Warranty, issued by Werner Co.: the box is warranted against defects in material and workmanship for its expected lifetime, counted from the day you buy it.
    • Only the original purchaser is covered, and coverage ends if the box passes to a new owner.
    • Every claim needs a copy of the original sales receipt, so keep your Prestige Truck order receipt with your records.
    • Werner Co. picks the remedy: it repairs the faulty part or replaces the whole box at no charge for parts or labor, or it may refund what you paid or issue a credit toward a new Weather Guard product.
    • Not covered: normal wear and tear, cosmetic rust, scratches, accident damage, repairs Werner Co. did not authorize, misuse, overloading, or a box that was not mounted or used as Weather Guard's written instructions describe. Damage to what is stored in the box or to the vehicle is excluded too.
    • Where the law allows, Werner Co. accepts no liability for incidental, special, indirect or consequential damages, economic loss included. This is the only express warranty on Weather Guard products, and no dealer can change it.
    • Report a problem promptly once you find it. To start a claim, contact us with your order number and photos of the issue, and we will take it up with Weather Guard for you.

  • Free shipping

    Ships free to the lower 48 states, with no minimum order.
    • Order by 5 PM ET on a business day and it starts processing the same day.
    • Most orders arrive within 1-5 business days.
    • We email your tracking number as soon as it ships.

  • Inspect on delivery

    Confirm the two keys and the clamp kit (four clamps, carriage bolts and fender washers) are in the carton, then check the seal and finish before mounting. Check it as soon as it arrives.
    • Look for crushed ends, punctures or tears in the carton.
    • If something looks wrong, take photos of the box and the parts (and if a driver asks you to sign, note the damage on the receipt).
    • Open the box and check the parts against the parts list before you install.
    • Email support@prestigetruck.com right away with your order number, a short note and photos. We send a replacement or a full refund at no cost to you.

  • 30-day returns

    Return it within 30 days of delivery, unused, in the original packaging, with proof of purchase.
    • Email support@prestigetruck.com with your order number. We reply within 1-2 business days with instructions.
    • Damaged, defective or wrong item: we send a prepaid label or arrange a pickup.
    • Changed your mind: you pay return shipping. No restocking fee.
    • Refunds go back to your original payment method within 7 business days of approval. See our returns policy.

What our customers say

4.6 · 22 reviews

KP Verified
07/01/2025

Very nice toolbox, glad they offer it in this white powder coated steel option, should hop

Very nice toolbox, glad they offer it in this white powder coated steel option, should hopefully last a long time and can't see any reasons why it wouldn't. Opens and closes very smooth, stays water tight, and the locking mechanisms are superior to many other toolbox brands. Has a lot of space inside and even came with a couple extra things like a bolt/screw organizer and clips to hold a level. The mounting system was very simple yet rugged and solid, and the 2 loops on the front are perfect for strapping down things like gas cans and propane tanks etc. Overall very happy with this product and highly recommend it to anyone willing to spend the extra money for the high quality that it is.

JASON Verified
10/19/2025

Best truck tool box, but box is kinda expensive...

Best truck tool box, but box is kinda expensive

JOHN Verified
07/17/2025

The staff was great loading and working with me during...

The staff was great loading and working with me during pick up.

BigDaddy73 Verified
07/05/2025

Arrived as scheduled, no dents, dings or scratches, seems like...

Arrived as scheduled, no dents, dings or scratches, seems like a sturdy tool box.

Shayne
08/18/2026

One great tool box

This is one tough box. It has remained water tight since bought new!

wbrownl Verified
06/15/2025

Great Product, Fast Shipping !!!! Thank You.

Great Product, Fast Shipping !!!! Thank You.

Jerry Verified
06/10/2025

Really like the product, arrived in great shape, didn't make...

Really like the product, arrived in great shape, didn't make delivery date or second delivery date, but finally did arrive and all is well !

Dan Verified
03/23/2025

The best tool box I’ve ever owned. Heavy duty...

The best tool box I’ve ever owned. Heavy duty construction, best thing to theft proof I could find

MacA
06/27/2026

Love the toolbox but..

The toolbox has served me well for the 2 years that I've had it. Overall still in great condition but as i had read in some reviews before i bought it, there seemed to be issues with workmanship. For my unit, the welds were not ground down at all on the outsides of the box, which when i first got it, thought nothing of it. But about 1.5 years into owning it I started to notice rust forming from underneath the paint from those areas with bulging welds, more specifically on both front edges of the box were the lock buttons are. I guess this is bound to happen over time, but it seems those bulging welds that were not ground down only increased the speed of the rust forming. Since they are not flat & uniform. Anyways overall, i still like it, but may go for a higher end toolbox in the future if i continue to see more rust from underneath the paint which is is impossible to detect before…

DB Verified
12/16/2024

It was the easiest installation that I have ever done...

It was the easiest installation that I have ever done with quality hardware.

The Demolition Company
09/17/2025

Very strong and looks great

Love the smooth black finish and strength of the box. One lock stopped working but it’s under warranty and they are sending me a new one.

Austin Verified
11/21/2024

Very easy to install. Looks nice in 6ft bed not...

Very easy to install. Looks nice in 6ft bed not too big. Large carrying capacity. Fits a small cooler and a full set of tools. Comes with a sliding tray for drill bits etc. As well as a plastic box with separators for screws etc. Very well made and completely waterproof.

MSC Verified
08/15/2024

The only complaint is that the picture is misleading, it shows black diamond plate and the

The only complaint is that the picture is misleading, it shows black diamond plate and the box is in fact flat steel.

JOHN A Verified
08/10/2024

I was very happy with my weather guard toolbox ...

I was very happy with my weather guard toolbox purchase and the HD online experience

HomeDepotCustomer Verified
07/16/2024

love this Box, I thought it was a little bit overpriced , But the quality makes up for it, and the Manford top design is so much better than the Flat design I'm very happy with it

Dan
08/22/2025

Sturdy High Quality Tool Box!

After having read some of the reviews I was hesitant. However, the box I received was perfect. Great workmanship. Solid feel. Sturdy. I feel like this box will last a long time!

Me Verified
08/16/2025

I got what I wanted it’s a good box but...

I got what I wanted it’s a good box but the latches that attach from the box to my truck didn’t work

DonH
04/16/2025

Solid box, questionable workmanship!

I am happy with the design of the box, solid and secure. However, the quality control and workmanship are equal to overseas at best. You will see in the photos, incomplete powder coat coverage. Poor or in-completed prep work before the powder coat, and tasks completely missed. Sure, these are not major issues, but this is a premium priced box, and therefore judged as such. Would I recommend Weatherguard? Yes, but with a word of caution. American design, Overseas build quality!

Nick L Verified
04/28/2025

Functional

Product was damaged during shipping. Still is functional, but paint will eventually chip off

Nicknamefornicknamebox Verified
02/10/2025

The box is good, locks operate like butter. Both locks engage when closing by simple pushi

The box is good, locks operate like butter. Both locks engage when closing by simple pushing firmly on one side of the box. As good as this box is I can't say it's worth the price point (to me). Fit and finish is ok as some spots were not consistent with powder coating. Also, I would have liked a little thicker material. That's why I give it a 4 stars and not the 5. I'm out.

TEAM + Bullet Liner & Acc
12/25/2024

Great quality and reliability

We at TEAM Plus Bullet Liner find this and all WeatherGuard products to be one of our favorite product lines to "go to" when outfitting truck for our customers whether for contractor or individuals.

WashingtonState
04/13/2024

Nearly perfect

The quality of this box is second to none. It is well built and the tray layout is very efficient. Two things I see that prevent this from being 5 stars. First the mounting brackets need to be wider to offer an more secure fit on trucks with plastic rail covers. They work but are not as secure as I would prefer. Second for a box that costs as much as this one does they should include a plug kit for the mounting bolt holes. For those of us in rainy climates water does get in the box through the holes. Duct tape fixed it for me but it is an engineering oversight in my opinion.

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