Cabtherlyn Trailer Document Holder Aluminum Waterproof Tube 4-Pack — 1-5/8" x 9.7" with Rubber End Caps

Cabtherlyn Trailer Document Holder is a waterproof, aluminum tube-style case that protects and organizes trailer registration, insurance and towing papers while mounted on trucks, trailers or tractors.

Keep essential vehicle documents safe from weather and road grime with this rugged, corrosion-resistant aluminum registration box. Each 4-pack includes tubular holders with rubber end caps and cables for secure attachment. The slim 1-5/8" diameter design fits neatly on frames or behind license plates, making paperwork accessible without taking up cabin space.

How does this holder protect documents from rain, mud and salt spray?

The holder uses a durable aluminum alloy tube plus tight-fitting rubber end caps to form a moisture-resistant seal. Acrylic components add stiffness while resisting corrosion so contents stay dry and readable.

• Water-resistant rubber end caps that compress for a snug closure
• Aluminum alloy body resists rust from road salt
• Acrylic reinforcement to prevent cracking or splitting

Will this fit standard trailer paperwork and where can it mount?

The interior tube dimensions suit common registration and insurance cards and folded papers; overall length and diameter accommodate most documents folded or rolled. Mounting is flexible: attach to trailer frames, inside toolboxes, behind license plates, or on tractor bodies using the supplied cables or other secure fasteners.

• Internal tube diameter: 1.57" (1-5/8") for rolled or folded papers
• Overall dimensions: 9.7" L × 3.9" H × 5.7" W for compact storage
• Includes cables and caps for frame or bracket mounting

How easy is it to use and maintain this registration tube?

Operation is straightforward: remove an end cap, insert paperwork, then reseal. Routine care is minimal — wipe the aluminum clean and check cap seals occasionally to maintain moisture resistance.

• Simple cap removal and reinstallation for quick access
• Low-maintenance aluminum surface wipes clean of road grime
• Check rubber caps periodically for wear and replace if needed

What makes this a practical choice for different trailer types?

Its compact tube design and durable materials suit a wide range of towed equipment from utility and cargo trailers to campers and horse trailers. The holder also adapts to many motorcycles or off-road rigs where a small, weatherproof document solution is needed.

• Works with campers, horse trailers, utility trailers and many tractors
• Space-saving shape mounts in tight areas or under frames
• Four-piece set lets you equip multiple vehicles or keep spares

Who is this for: The Cabtherlyn Trailer Document Holder is designed for owners and operators who need a simple, reliable way to protect registration, insurance and shipping papers from the elements. It's ideal for fleet managers, recreational vehicle owners, farmers, haulers and anyone who wants quick access to clean, dry paperwork without cluttering the cab.