rc industries|SKU:MM181412.S-var-53746-eb2f7a

RC Industries M Series Steel Underbody Tool Box

Industrial-Strength Underbody Storage for Flatbeds and Service Trucks

14 gauge steel build — Commercial-grade construction resists deformation
Weatherproof bulb seal — Automotive-grade seal blocks moisture and dust
25 size configurations — Find exact fit for your rig
Drop down door access — Pan-formed door with integrated gutter system
  • Free shipping -- Ships free to your door, no minimum

Price range: $394.04 through $1,434.43

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In the box

  • RC Industries M Series steel underbody tool box
  • Stainless steel L-style hinge (installed)
  • Heavy duty door retainer chains (installed)
RC Industries Steel Underbody Tool Box M Series
RC Industries M Series Steel Underbody Tool Box
$394.04 – $1,434.43Price range: $394.04 through $1,434.43

Industrial-Strength Underbody Storage for Flatbeds and Service Trucks

The RC Industries M Series steel underbody tool box is a vetted investment for fleets needing secure, weatherproof storage beneath flatbeds, service bodies, or trailers. Built with commercial-grade 14 gauge steel, this drop-down door box features an automotive bulb seal and stainless steel hinges to keep your gear dry and protected. Available in multiple lengths and three durable finishes, this curated option delivers the craftsmanship required to handle daily jobsite demands. Ships free with a 30-day hassle-free return policy.

FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT
Weatherproof Bulb Seal
14 Gauge Steel Build
Optional Shelf Available
Underbody Mount Design
14 Gauge
Steel Construction
26
Size Options Available
3
Finish Options
14 Gauge Steel Eliminates Premature Box Failure

14 Gauge Steel Eliminates Premature Box Failure

The fleet manager's worst underbody storage scenario is a weld failure that dumps tools onto the highway or lets water destroy expensive equipment. RC Industries addresses this with 14 gauge steel construction and craftsmanship throughout the M Series — a curated choice by Tank Vault because it passes our build quality standards. The stainless steel "L" style hinge and heavy duty door retainer chains reinforce structural integrity at stress points where competitor boxes typically fail. This is commercial-grade storage built to last through years of road vibration and weather exposure without weld cracks that cause downtime and lost tools.

Automotive Bulb Seal Keeps Contents Dry and Clean

Automotive Bulb Seal Keeps Contents Dry and Clean

An underbody tool box is only as good as its ability to keep water, dirt, and road salt out. The M Series uses an automotive bulb seal — the same sealing standard found in vehicle doors — to create a weatherproof barrier around the drop down door. Combined with the pan formed door and integrated gutter system, water is directed away from the seal line rather than pooling and seeping through. For fleet operations where tools represent thousands of dollars in investment, this seal design prevents rust damage to contents and eliminates the need to dry out or replace tools after every storm.

25 Size Configurations Match Any Flatbed or Trailer Layout

25 Size Configurations Match Any Flatbed or Trailer Layout

Fleet vehicles come in different configurations, and a tool box that doesn't fit properly creates mounting problems and wasted space. The M Series offers 25 dimension options ranging from 18 inches to 96 inches in length, with multiple width and height combinations. Whether you need a compact 18"x12"x14" single-door box for tight frame rail spacing or a full 96"x24"x24" unit for maximum capacity, there is a configuration that fits your specific flatbed, service body, or trailer without modification. Available in matte black, gloss black, or gloss white finish to match your fleet's appearance standards.

Compatibility Guide

Verify your mounting space before ordering to ensure a proper fit.

  • Minimum 12 inches of vertical clearance beneath the truck bed or trailer
  • Flat, solid mounting surface capable of supporting 54+ pounds
  • Available frame rail or crossmember spacing matching selected box length

Built for the Job Site

Optimized storage for professionals who keep their gear out of the cab and close to the work.

Service Body Tool Storage
Flatbed Equipment Organization
Trailer Parts Securement

Full specifications

At a glance

Dimensions
18"x12"x14", 18"x18"x18", 24"x12"x14", 24"x16"x14", 24"x18"x18", 24"x24"x18", 24"x24"x24", 30"x18"x18", 30"x24"x18", 30"x24"x24", 36"x16"x14", 36"x18"x18", 36"x24"x18", 36"x24"x24", 48"x18"x18", 48"x24"x18", 48"x24"x24", 60"x18"x18", 60"x24"x18", 60"x24"x24", 72"x18"x18", 72"x24"x18", 72"x24"x24", 90"x18"x18", 96"x18"x18", 96"x24"x24"
Surface
14 gauge steel
Warranty
See product page
Compliance
See product page
Full specifications8 data points across 4 categories

Dimensions

Available Sizes18"x12"x14", 18"x18"x18", 24"x12"x14", 24"x16"x14", 24"x18"x18", 24"x24"x18", 24"x24"x24", 30"x18"x18", 30"x24"x18", 30"x24"x24", 36"x16"x14", 36"x18"x18", 36"x24"x18", 36"x24"x24", 48"x18"x18", 48"x24"x18", 48"x24"x24", 60"x18"x18", 60"x24"x18", 60"x24"x24", 72"x18"x18", 72"x24"x18", 72"x24"x24", 90"x18"x18", 96"x18"x18", 96"x24"x24"
Weight (18"x12"x14")54 pounds

Power & Performance

Performance SpecsSee product page

Materials

Body Material14 gauge steel
HingesStainless steel "L" style hinge
SealAutomotive bulb seal
Finish OptionsGloss Black, Gloss White, Matte Black

Compliance & Warranty

Compliance & WarrantySee product page

The Tank Vault Promise

We stand behind every product we sell with straightforward policies.

Vetted QualityEvery tool box is evaluated for real-world durability and build standards before it earns a spot in our catalog.
Ships FreeUnconditional free shipping on your order, delivered directly to your home or commercial address.
30-Day ReturnsIf it doesn't meet your expectations, return it within 30 days for a hassle-free refund.
★★★★★
“Mounted two of these under our service trucks six months ago. The 14 gauge steel feels solid, the drop down doors seal tight even after hundreds of cycles, and the gloss black finish still looks sharp. Way better construction than the boxes we replaced from the big-box supplier.”
F
First L.Dallas, TX

RC Industries steel underbody truck tool boxes with drop down doors are available in matte black, gloss black, gloss white.

These tool boxes are designed to mount below the bed of a flatbed, service body truck, or trailer.

RC Industries Steel Underbody Tool Box Features:

  • Designed with 14 gauge steel.
  • Available with matte black, gloss black or gloss white finish.
  • Pan formed drop down door with integrated gutter.
  • Heavy duty door retainer chains.
  • Stainless steel “L” style hinge.
  • Automotive bulb seal for weatherproof seal.
  • Optional: Add a welded in or adjustable shelf.

RC Industries Steel Underbody Box Sizes & Dimensions:

Steel – Matte Black, Gloss Black or Gloss White Finish

  • 18″L x 12″W x 14″H: 54 pounds / single door
  • 24″L x 12″W x 14″H: 56 pounds / single door
  • 24″L x 16″W x 14″H: 60 pounds / single door
  • 36″L x 16″W x 14″H: 84 pounds / single door
  • 18″L x 18″W x 18″H: 60 pounds / single door
  • 24″L x 18″W x 18″H: 72 pounds / single door
  • 30″L x 18″W x 18″H: 88 pounds / single door
  • 36″L x 18″W x 18″H: 96 pounds / single door
  • 48″L x 18″W x 18″H: 122 pounds / single door
  • 60″L x 18″W x 18″H: 140 pounds / single door
  • 72″L x 18″W x 18″H: 158 pounds / double door
  • 90″L x 18″W x 18″H: 186 pounds / double door
  • 96″L x 18″W x 18″H: 196 pounds / double door
  • 24″L x 24″W x 18″H: 90 pounds / single door
  • 30″L x 24″W x 18″H: 107 pounds / single door
  • 36″L x 24″W x 18″H: 123 pounds / single door
  • 48″L x 24″W x 18″H: 155 pounds / single door
  • 60″L x 24″W x 18″H: 188 pounds / single door
  • 72″L x 24″W x 18″H: 224 pounds / double door
  • 24″L x 24″W x 24″H: 109 pounds / single door
  • 30″L x 24″W x 24″H: 130 pounds / single door
  • 36″L x 24″W x 24″H: 140 pounds / single door
  • 48″L x 24″W x 24″H: 185 pounds / single door
  • 60″L x 24″W x 24″H: 222 pounds / single door
  • 72″L x 24″W x 24″H: 242 pounds / double door
  • 96″L x 24″W x 24″H: 280 pounds / double door

Other Tool Box Options:

  • For more options see other RC Industries Tool Boxes or all Underbody Tool Boxes.

Additional information

TYPE

Gloss Black, Gloss White, Matte Black
Dimensions

18"x12"x14", 18"x18"x18", 24"x12"x14", 24"x16"x14", 24"x18"x18", 24"x24"x18", 24"x24"x24", 30"x18"x18", 30"x24"x18", 30"x24"x24", 36"x16"x14", 36"x18"x18", 36"x24"x18", 36"x24"x24", 48"x18"x18", 48"x24"x18", 48"x24"x24", 60"x18"x18", 60"x24"x18", 60"x24"x24", 72"x18"x18", 72"x24"x18", 72"x24"x24", 90"x18"x18", 96"x18"x18", 96"x24"x24"

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Frequently Asked Questions

All grills ship fully assembled in heavy-duty crating. Just remove the packaging, add propane or charcoal, and cook. No tools required.
We offer free 30-day returns on all grills. If you're not completely satisfied with your purchase, contact us and we'll arrange a free pickup.
Yes — 0% interest financing is available on eligible purchases. Split into 4, 6, or 12 monthly payments with no hidden fees.
Yes. We carry a full catalog of OEM replacement parts including grates, burners, igniters, and heat shields for every brand we carry.
Absolutely. Our grills are built for all-weather use. The 304 stainless steel construction is designed to handle temperature extremes from -20°F winters to 110°F summers.
SKU: MM181412.S Categories: , Brand:

The Tank Vault Promise

We stand behind every product we sell with straightforward policies.

Vetted Quality Every tool box is evaluated for real-world durability and build standards before it earns a spot in our catalog.
Ships Free Unconditional free shipping on your order, delivered directly to your home or commercial address.
30-Day Returns If it doesn't meet your expectations, return it within 30 days for a hassle-free refund.

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