Weather Guard 636-0-02 underbed box in bright aluminum diamond plate, front three-quarter studio view with the door closed
Weather Guard 636-0-02 underbed box in bright aluminum diamond plate, door open, showing the interior floor and the full opening
Weather Guard aluminum underbed tool box mounted under a flatbed truck body

Weather Guard 636 Underbed Truck Tool Box, 36 in Bright Aluminum, 6.5 cu ft (636-0-02)

$1,100.00 $1,515.99 Save $415.99
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Features

  • Fits flatbed and dump bodies: Built to hang below the deck of a flatbed, platform or dump body, it turns the empty space under the deck into storage you can lock.
  • Aluminum door and hinge: Weather Guard gives its steel underbed boxes an aluminum door and hinge to save weight and fight corrosion (its listing for the compact 525 leaves this out). The 600 series boxes are built in aluminum.
  • Rain gutter + weather seal: A rain gutter runs above the opening and a full seal rings the door, so rain and road spray stay off the tools inside.
  • Stainless D-handle: The stainless steel D-handle is easy to grab in work gloves, and closing the door with it pulls the door snug against the seal.
  • Quick-release door: QuickClips let the door stop at 90 degrees or drop all the way to 180 degrees, and you change between the two without tools.
  • Three-point latching: A heavy-duty latch holds the door at three points, so it stays shut and your supplies stay protected between jobs.

Description & Fitment

Mounted below a flatbed or dump body, the 636-0-02 adds 6.5 ft³ of storage you can lock. This aluminum box measures 36.63" L x 18" W x 18" H, weighs 46 lb and wears clear ARMOR TUF powder coat over aluminum diamond plate, with a 13.5" H x 31.25" W door opening.

Fitment & Compatibility

Check your fit: this box hangs below the deck of a flatbed, platform or dump body, not inside a pickup bed. Measure the open space under your deck against its 36.63" L x 18" W x 18" H footprint and check the 13.5" H x 31.25" W door opening will clear your body's frame and fittings. It mounts on Type "A" or Type "B" brackets.

Not for: pickup beds without a flatbed, platform or dump body. Same box in another finish: 636-5-02. Other 36" underbed boxes: 536-5-02, 538-5-02. Not included: mounting brackets and hardware, which Weather Guard leaves to your truck equipment dealer.

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

Will the 636-0-02 fit under my body?

Measure the space under your deck between the frame and the body edge. The box needs 36.63" L x 18" W x 18" H overall, plus room for the brackets, and the door opens down to 180 degrees, so leave clearance below it.

Can I mount it on top of a stake bed?

Weather Guard allows a stake-bed top mount as long as the whole bottom of the box is supported. Otherwise it goes under the body on Type "A" or Type "B" brackets.

Does this box go inside a pickup bed?

No. Weather Guard builds it to hang under the deck of a flatbed, platform or dump body. For storage inside a pickup bed, look at Weather Guard's crossover, Lo-Side or chest boxes.

Are the mounting brackets included?

No, mounting hardware is not in the box. Weather Guard's sheet says chassis vary, so it sends you to a truck equipment dealer for the brackets and the mounting steps. If you make your own brackets or angles, the sheet calls for steel at least 1/4" thick, and every box must sit on Type "A" or Type "B" brackets.

How far does the door open?

The QuickClips hold the door at 90 degrees, or you can let it swing down to 180 degrees. Switching between the two takes no tools.

Can I get several boxes on one key?

Weather Guard lists keyed-alike locks as available on request. Contact us before you order if you want more than one box on the same key, and we will check it with Weather Guard.

Installation

Install time Not printed on Weather Guard's install sheet
DifficultyNot printed on Weather Guard's install sheet
TypeFrame-mount underbed box, hung below a flatbed, platform or dump body on Type "A" or Type "B" brackets (Weather Guard installation instructions for its steel and aluminum underbed boxes). Brackets and hardware are not includedWeather Guard says chassis vary, so the brackets and procedure come from a truck equipment dealer
ToolsNot printed on Weather Guard's install sheet

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

  1. Mount every steel or aluminum underbed box on Type "A" or Type "B" brackets, as shown. Mounting it any other way can damage the box.
  2. For a stake-bed top mount, support the whole bottom of the box.
  3. On 24" deep underbeds, add a third Type "A" bracket in the center, or a third cross brace in the center of the Type "B" brackets.
  4. Chassis vary, so get the mounting procedure and brackets from a truck equipment dealer. If you make your own brackets or angles, use steel no thinner than 1/4".
  5. Before you drill, check behind and under each spot for wires, fuel lines and brake lines. Wear eye protection.

Stuck on a step? Ask our install experts

Specifications

BrandWeather Guard
Part Number636-0-02
Box typeUnderbed box for flatbed, platform or dump bodies
DoorSingle door, tool-free QuickClips for 90 or 180 degree opening
HandleStainless steel D-handle
LatchingHeavy-duty three-point latching
Weather sealRain gutter and full weather seal, memory-resistant D-shaped ribbed weather strip
ConstructionHeavy-duty welded, C-channel reinforced door
Key alikeAvailable on request
Mounting hardwareNot included
Country of originUSA
Series636 Series Underbed Box
MaterialAluminum
FinishClear ARMOR TUF powder coat over aluminum diamond plate
Exterior dimensions36.63" L x 18" W x 18" H
Door opening13.5" H x 31.25" W
Capacity6.5 ft³
Weight46 lb
Shipping dimensions37.125" L x 18.82" W x 18.56" H
Shipping weight46 lb
WarrantyWeather Guard Limited Lifetime
UPC783965042031

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

    Open the door and check the weather seal, the latch and both QuickClip stops before the box goes up on its brackets. 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 · 1 review

CAMERON
10/26/2024

Sturdy and weather proof.

I used this as a high side box since the dimensions worked for my needs. I ran it through the car wash and the inside was totally dry. Only dinged 1 star because one key doesnt work and the other is tricky but works. Hopefully tumblers will loosen up like they did on my cross box.

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