Trailer Document Holder Waterproof Registration Card Box - 4 Pack

Our review of the Cabtherlyn trailer document holder finds it is a simple, rugged solution for drivers who need to keep trailer paperwork dry and accessible. Built from durable aluminum alloy with an acrylic finish and rubber end caps, this 4 pack of tube-style holders is designed to store registration, insurance and permit papers on trailers, trucks or tractors. The clear benefit is weatherproof organization: the sealed tube prevents moisture and road grime from ruining documents while remaining compact enough to mount on a variety of trailer frames.

Key Features

• Durable aluminum alloy: The metal tube and acrylic components resist corrosion and stand up to road exposure for long-term use.
• Waterproof seal: Rubber end caps and cable attachments provide a tight closure so papers stay dry in rain and splashes.
• Compact dimensions: At about 9.7 in long and 1.57 in tube diameter, the holder fits folded registration cards and slim documents without taking much space.
• Easy to mount: The tube style and included cables allow attachment to many trailer frames, making it straightforward to install on campers, horse trailers or utility trailers.
• Organizes paperwork: Having a dedicated, sealed place for registration and insurance means less fumbling at inspections and roadside stops.

Who It's For

This holder is aimed at trailer owners, tow vehicle drivers and fleets that require a simple, weatherproof spot to store registration cards, insurance documents and DOT paperwork. It is particularly useful for those who regularly tow campers, horse trailers or utility trailers and want to avoid damaged or lost papers.

People who need to carry large binders, multiple full-size certificates, or rigid folders should look elsewhere; the 1.57 in tube diameter is best for folded cards and a few slim sheets rather than thick stacks of documents.

Pros & Cons

Pros

• Robust aluminum construction resists corrosion in wet conditions.
• Rubber end caps create a secure, waterproof seal for peace of mind on the road.
• Compact, tube-style design mounts easily and keeps paperwork organized and accessible.

Cons

• Small tube diameter limits the capacity to folded cards and a few thin sheets rather than large stacks.

Specifications

Brand	Cabtherlyn
Material	Aluminum alloy and acrylic
Overall dimensions	9.7 in L x 3.9 in H x 5.7 in W
Tube diameter	1.57 in
Closure	Rubber end caps with cables
Pack quantity	4

Our Verdict

For trailer owners who value a low-cost, weatherproof way to protect registration and insurance papers, this aluminum tube holder is a practical choice. It delivers durable construction and a secure seal at a modest size, making it good value for anyone who needs compact, reliable document storage on the road.

Frequently Asked Questions

Will this hold standard folded registration cards?
Yes. The 1.57 in tube diameter is sized to accept folded registration and insurance cards and a few slim sheets.

Is it corrosion resistant for marine or salted-road use?
The aluminum alloy and acrylic construction resists corrosion, but placement away from direct salt spray and periodic inspection will extend life.

Can it be mounted on different trailer types?
Yes. The tube style and cable attachments make it suitable for campers, horse trailers, utility trailers and similar towing setups.