Product Description
Semi Trailer Panel Boxes: Heavy-duty underbody aluminum storage for working semi trailers. Made in the USA by AMERICAN TRUCKBOXES ATB®
The A-PE51 is a professional-grade aluminum semi trailer panel box built for livestock haulers, flatbed operators, and fleet owners who need secure, weather-tight underbody storage on the job. Drop-open single doors with DT-T-Handle locks provide fast, full-width access to stored panels, tie-downs, or seasonal gear. Every box is manufactured by American Truckboxes LLC in Blanchard, North Dakota, and is available in eight size configurations to fit a range of trailer frame openings.
- All-smooth aluminum construction: high-strength alloy body, fully seam welded with gusseted corners for long-term rigidity under road vibration
- Fast panel access: drop-open single doors run the full width of the box so large, flat items like winter trailer panels slide in and out without binding
- Flush bottom door frame: the opening sits flush at the bottom, making it easy to remove or clean out stored panels without lifting over a raised sill
- Positive weather-tight closure: continuous stainless steel hinges and automotive-type rubber door gaskets keep road grime and moisture out
- DT-T-Handle locks: stainless steel Dolphine Tale T-handle locksets resist corrosion and provide theft-deterrent security on every door
- Eight size options: heights from 12 to 18 inches, depths from 72 to 102 inches, and widths from 20 to 48 inches let you match the box to the exact trailer compartment opening
- Fleet-ready inventory: multiple units in the same configuration are available; contact truckbox.com or (888) 996-0376 for fleet pricing
Specifications
Material: Aluminum, fully seam welded
Dimensions: 12–18″ H × 72–102″ D × 20–48″ W (8 configurations)
Finish: All Smooth
Mounting: Underbody, semi trailer frame
Warranty: 60-month (5-year) limited warranty on standard boxes.
American Truckboxes has built underbody storage for the North American trucking industry for over 25 years, and every PE51 panel box ships from their facility in Blanchard, North Dakota. Visit truckbox.com or call (888) 996-0376 for custom sizing, fleet orders, or product questions.
Frequently Asked Questions
Q: Where is this toolbox made?
A: The A-PE51 is manufactured by American Truckboxes LLC in Blanchard, North Dakota. The company has been building heavy-duty truck and trailer storage in the USA for more than 25 years. More information is available at truckbox.com.
Q: What warranty comes with this toolbox?
A: Standard A-PE51 panel boxes carry a 60-month (5-year) limited warranty for the original purchaser. The warranty is non-transferable. Contact truckbox.com or (888) 996-0376 for full warranty terms.
Q: Can I order a custom size?
A: Yes, custom sizes are available. Custom and modified boxes carry a 12-month limited warranty instead of the standard 5-year coverage. Reach out through truckbox.com or call (888) 996-0376 to discuss your trailer dimensions.
Q: How does the door open on this semi trailer panel box?
A: The PE51 uses drop-open single doors that swing down and out of the way, giving full-width access across the entire box opening. The flush bottom door frame means large items like winter trailer panels can be removed or slid in without having to lift them over a raised threshold. Continuous stainless steel hinges and rubber door gaskets keep everything sealed when closed.
Q: Is this panel box weatherproof?
A: Yes. The A-PE51 is fully seam welded with gusseted corners and fitted with automotive-type rubber gaskets on the doors. DT-T-Handle stainless steel locks clamp the doors closed to maintain a weather-tight seal, keeping road grime, rain, and moisture away from stored panels and equipment.
Q: How does the lock system work?
A: The PE51 uses stainless steel DT-T-Handle locks. The T-handle design provides a firm, positive grip in work gloves and resists corrosion in road-salt environments. Each handle is keyed and secures the door against both the weather seal and unauthorized access.
Q: Which size configuration do I need for my trailer?
A: Eight size options are available, with heights from 12 to 18 inches, depths from 72 to 102 inches, and widths from 20 to 48 inches. Measure your trailer’s underbody compartment opening, then select the configuration that fits your frame. Call (888) 996-0376 or visit truckbox.com if you need help matching a box to your trailer specs.