Overview
The NOVA 350 Series Flange Style vehicle restraint prevents that. It keeps dock operations safe and secure during loading and unloading. Trucks and trailers are held firmly in place by a high-visibility barrier-style ram bar that can withstand a pullout force of over 30,000 pounds — preventing accidental separation from the loading dock. The Flange Style housing is designed to be anchored into the concrete drive. This installation method provides years of trouble-free service without any damage to the building, unlike other restraints that attach to the dock wall. This style also allows for easier movement to other dock positions in the event of required location changes. The housing bolts directly to the surface of the approach using heavy-duty anchor screws — no core drilling required for the housing itself. This makes it faster to install and easier to reposition if your dock layout ever changes.
Features and Benefits
The 350 Series Flange Style shares the same proven engineering as the rest of the NOVA Truck Lock™ line. The vertical ram bar is made from 4-5/16" wide by 1" thick ASTM A-514 Grade B plate with a minimum yield strength of 100,000 PSI. The housing is constructed from 6" x 3" x 1/4" ASTM A500 Grade B rectangular steel tubing, capped with a ram sheath cast of 55,000 PSI minimum yield strength steel and fully welded to the housing tube. The housing and gussets are welded to a 25-inch long by 16-inch wide, 3/8-inch thick base plate, then secured to the concrete approach with seven heavy-duty 5/8" x 5" hex head anchor screws. This gives the Flange Style a strong, stable foundation without the need for a concrete-embedded installation.
The system's built-in communication package keeps dock workers and truck drivers informed at every step. Outside, constant flashing red or green LED lights tell the truck driver when it's safe to back in or pull away. Inside, matching LED lights and signs let the dock attendant know when loading or unloading can begin. An audible alarm also sounds if the ram bar can't fully extend to engage the rear impact guard. If power goes out, the restraint stays locked and can still be released normally. The system comes standard with a 10-inch retracted height, a non-impact design, and very few moving parts — making it one of the easiest restraints to keep running. The lifetime structural warranty is the longest in the industry. All competing products offer only a 5-year structural warranty.
Applications
The 350 Series Flange Style is the right fit for facilities that need a high-performance dock restraint system but want a faster installation or the option to relocate the unit if dock positions change. It handles the same wide range of trailer types as the rest of the 350 Series line — liftgate trucks, intermodal container chassis, standard trailers, and RIGs with obstructions or cover plates — making it a strong choice for mixed-fleet operations. Its 9 to 31-inch engagement range covers more trailer configurations than most competing products.
- Retrofit projects on existing concrete docks where embedded installation isn't practical or cost-effective
- Facilities with evolving dock layouts where relocating the restraint to another position may be needed down the line
- Distribution centers and warehouses with high daily trailer volume that need a dependable, low-maintenance solution
- Mixed-fleet operations receiving liftgates, container chassis, and standard trailers at the same docks
- Nontraditional dock configurations where wall-mounted restraints are not an option
- Docks requiring an interlock — an optional add-on cuts power to an overhead door or leveler until the ram bar is fully raised, then restores power once the restraint is confirmed engaged
Selection Assistance
Choosing between the Flange Style and the Cast-In Style comes down to your installation situation and whether you may ever need to relocate the unit. The Flange Style bolts to the surface of the concrete approach using anchor screws. It allows for easier movement to other dock positions if required. It's a good fit for retrofit projects, facilities with existing concrete that can't be core-drilled, or operations that want more flexibility. The Cast-In Style is embedded 21 inches into the approach. It becomes a permanent part of your dock structure and only needs preventive service once a year. A site survey is still recommended before installation to confirm the approach thickness and condition. Barron Equipment has been installing loading dock truck restraints for over 43 years. Our team can assess your dock, review your trailer mix, and help you decide whether the Flange Style or Cast-In Style is the better fit.