Side Underride Guards for Semi-Trailers

Designed to protect vehicle occupants if a side collision occurs

Side Underride

Side Underride Devices – Guardian and AngelWing

      Semi-Trailer |   Flatbed

With over 1,000,000 miles of real-use road testing under our wheels, our underride guard systems have withstood everything we could throw at it including:

  • Weather condition including snow, ice, sand and other road debris,

  • No rattling, vibrations, or interference with the operation of the trailer, and

  • No negative issues to the structure of the trailer body.


See other official IIHS Video ►(Click Here)

AirFlow Deflector’s side underride impact guards are the only side safety devices successfully crash-tested six (6) times, including twice (2) by the Insurance Institute for Highway Safety (IIHS) proving that Passenger Compartment Intrusion (PCI) is prevented at speeds of up to 40 mph.  This means that AirFlow has set the standard for side underride protection.

Side Underride Device

Side Underride Device

Fleet, OEM or need information?

In Summary, 

Available configurations include dry-box, reefer, flatbed, tanker and other specified trailers,

Limited lifetime warranty* and a full 60-day satisfaction policy,

Modular design that moves with the trailer without added tension or stress points,

Trailer guards have been road-tested with over 1,000,000 miles  of real use without any reported damage, abnormalities or issues caused to the trailer**,

Mounts to existing cross members,

Weighing in at between 150 – 800 pounds, depending upon the configuration,

Includes all mounting hardware,

Installs in less than 2 hours, 2 people with no welding or specialized tools,

Integrates with most side skirts to maintain SmartWay / C.A.R.B  certification,

Sold directly through AirFlow Deflector and affiliated dealerships,

Fleet/volume and “Trial” pricing available,

USA Made – Sourced, and assembled, 

Fleet financing available (OAC).

*  -Original owner/original truck only,
-Covers defects in material and workmanship under normal use,
Warranty does not cover damage due to road hazards or misuse,
Contact AirFlow Deflector for details.
**  When properly installed as per AFD guidelines