After researching manufacturer specifications, published safety standards, and aggregated owner feedback, we evaluated the top generator boxes for travel trailers. These enclosures protect your generator from weather, theft, and noise while ensuring proper ventilation. Our guide compares seven real products to help you choose the right size, material, and features for your setup.
| Photo | Product | Score | Buy |
|---|---|---|---|
|
🚗
|
DuraMax RB-12A Generator Box Best Overall Heavy-duty 16-gauge steel with powder coat finish; fits generators up to 12.5 inches wide |
9.0 | 🛒 Check Price |
|
🚗
|
GenTent 620 Generator Cover Best Weather Protection Heavy-duty fabric with clear window; fits generators up to 24 inches tall |
8.7 | 🛒 Check Price |
|
🚗
|
Arksen ARG-20 Generator Box Best Budget Option Aluminum construction with black powder coat; fits generators up to 20 inches wide |
8.2 | 🛒 Check Price |
 |
Generac 71101 Weather Enclosure Best for Permanent Installation Rugged composite material; designed for Generac GP series generators up to 6500 watts |
8.5 | 🛒 Check Price |
 |
Peterson 22610 Generator Box Most Secure Heavy-duty 14-gauge steel with welded seams; fits generators up to 18 inches wide |
8.1 | 🛒 Check Price |
 |
Westinghouse 10001 Generator Cover Best Portable Cover Heavy-duty polyester with PVC coating; fits generators up to 28 inches long |
7.8 | 🛒 Check Price |
|
🚗
|
ToughGuard TGB-15 Generator Box Best for Small Generators Powder-coated steel; fits generators up to 15 inches wide and 14 inches tall |
7.4 | 🛒 Check Price |
1. DuraMax RB-12A Generator Box: Best Overall
The DuraMax RB-12A impressed us with its robust 16-gauge steel build and thoughtful ventilation design. We researched owner feedback and found that this box consistently protects generators from rain and theft while keeping noise levels down. The powder-coated finish resists rust, and the pre-drilled holes simplify mounting on a trailer tongue. In our evaluation, it offers a great balance of durability and practicality for most travel trailer owners.
However, the lid only opens about 90 degrees, which can make reaching generator controls a bit awkward. If you need full top access for a larger generator or frequent service, consider a model with a lift-off lid. This box is best for standard portable generators up to 12.5 inches wide and owners who prioritize security and weather resistance over easy access.
- Lockable lid with two padlock hasps for security
- Built-in ventilation louvers on all four sides
- Pre-drilled mounting holes for easy installation on trailer tongue
Pros: Rugged steel construction withstands road debris and weather; Excellent airflow prevents generator overheating
Cons: Lid does not open fully, making access to controls slightly tight
2. GenTent 620 Generator Cover: Best Weather Protection
The GenTent 620 is a unique fabric cover that acts like a tent for your generator. We compared its design to rigid boxes and found it excels in weather protection while allowing maximum airflow. Owner feedback highlights its effectiveness in heavy rain and snow, keeping generators dry and running. The clear window is a thoughtful touch for monitoring. It’s also much lighter than steel boxes, making it easy to pack.
That said, it offers no security against theft since it’s just a cover. If you leave your generator unattended on a campsite, this may not be the best choice. It’s ideal for RVers who want portable, temporary weather protection and don’t need a permanent lockable enclosure.
- Patent-pending tent design allows exhaust and cooling airflow
- Clear vinyl window for monitoring fuel level and controls
- Includes tie-down straps and stakes for secure setup
Pros: Lightweight and easy to store when not in use; Provides excellent rain protection without overheating
Cons: Not lockable; offers minimal theft deterrence
3. Arksen ARG-20 Generator Box: Best Budget Option
The Arksen ARG-20 is a budget-friendly aluminum generator box that offers good value for the price. We researched its specs and found that it’s lighter than steel alternatives, making installation easier on a trailer tongue. The lockable latch provides basic security, and the powder coating helps prevent corrosion. Owner reviews generally praise its fit for smaller generators.
However, the aluminum is less impact-resistant than steel, so it may dent if hit by road debris. Also, the side vents are slots that could let in moisture if rain is driven sideways. This box is best for cost-conscious buyers with a small generator who don’t need heavy-duty protection.
- Lightweight aluminum resists rust and corrosion
- Side ventilation slots for airflow
- Includes lockable latch and mounting hardware
Pros: Affordable price point for a metal enclosure; Easy to lift and install due to aluminum build
Cons: Aluminum dents more easily than steel; Ventilation slots may allow some water ingress in heavy rain
4. Generac 71101 Weather Enclosure: Best for Permanent Installation
The Generac 71101 is a purpose-built enclosure for Generac GP series generators. We evaluated its composite construction and found it offers excellent durability and noise dampening. The integrated ventilation with rain shield ensures generators stay dry and cool. Owner feedback indicates it holds up well in harsh sun and rain without fading or cracking.
Its main downside is limited compatibility. If you don’t own a compatible Generac model, it won’t fit properly. This box is ideal for those who already have a qualifying Generac generator and want a permanent, long-lasting enclosure that integrates well with their equipment.
- UV-stabilized composite won't rust or corrode
- Integrated ventilation system with rain shield
- Lockable door with key for security
Pros: Extremely durable composite resists dents and weather; Quiets generator noise better than metal boxes
Cons: Designed specifically for certain Generac models, limited compatibility
5. Peterson 22610 Generator Box: Most Secure
The Peterson 22610 is built like a safe. We researched its 14-gauge steel and welded construction, which makes it one of the most secure generator boxes available. Owner feedback confirms it can withstand significant force, making it a top choice for deterring theft. The baffled vents are a smart design that prevents water intrusion while maintaining airflow.
However, its weight is a major drawback. You’ll likely need assistance to mount it, and it may not be suitable for smaller trailer tongues. Also, the interior is snug, so check generator dimensions carefully. This box is best for owners who prioritize security over ease of installation and have a medium-sized generator.
- Welded corners and reinforced lid for maximum security
- Dual locking points with padlock hasps
- Ventilation slots with baffles to prevent water entry
Pros: Extremely sturdy construction deters theft; Baffled vents keep rain out while allowing airflow
Cons: Very heavy; difficult to install without help; Limited interior space; may not fit larger generators
6. Westinghouse 10001 Generator Cover: Best Portable Cover
The Westinghouse 10001 is a simple fabric cover designed for storage protection. We compared it to rigid boxes and found it serves a different purpose: keeping dust and moisture off the generator when not in use. The polyester fabric with PVC coating is waterproof and UV-resistant. Owner feedback notes it fits well and stays put in wind due to the elastic hem.
Critical limitation: it has no ventilation, so you cannot run the generator while covered. It’s purely a storage cover. Also, it offers zero security. This is best for RVers who want a cheap, lightweight cover for off-season storage and always run their generator uncovered.
- Waterproof and UV-resistant fabric
- Elastic hem and drawstring for secure fit
- Reflective strips for visibility at night
Pros: Very affordable and lightweight; Easy to put on and take off quickly
Cons: No ventilation; must be removed when generator runs; Not lockable; offers no theft protection
7. ToughGuard TGB-15 Generator Box: Best for Small Generators
The ToughGuard TGB-15 is a compact steel box tailored for small inverter generators. We researched its dimensions and found it’s ideal for models like the Honda EU2200i or Yamaha EF2000iS. The lockable latch and rubber seal offer decent protection from dust and light moisture. Owner feedback appreciates its space-saving design for those with limited tongue space.
However, its small size is also its biggest limitation. It won’t accommodate larger generators. Additionally, the bottom vent is exposed to road splash, which could be a problem in wet conditions. This box is best for owners of small portable generators who need a compact, lockable enclosure and don’t drive through deep puddles.
- Compact design for small inverter generators
- Lockable latch with rubber seal
- Bottom ventilation grille
Pros: Small footprint fits tight spaces on trailer tongue; Rubber seal keeps out dust and light rain
Cons: Only fits very small generators; limited capacity; Bottom vent may allow water splash-up from road
Frequently Asked Questions
What size generator box do I need for my travel trailer?
Measure your generator’s width, height, and depth, then add at least 2 inches on each side for airflow. Most boxes list maximum generator dimensions. Check that the box can accommodate your model while allowing proper ventilation. We recommend reading the product spec sheet carefully before buying.
Can I run my generator inside the box?
Yes, but only if the box has adequate ventilation designed for running generators. Look for boxes with louvers, vents, or tent-style openings that allow exhaust and cooling airflow. Never run a generator in a sealed box, as it can overheat and cause carbon monoxide buildup.
How do I secure my generator box to the trailer?
Most boxes come with pre-drilled holes and mounting hardware. Use bolts, washers, and lock nuts to attach the box to the trailer tongue or frame. For additional security, consider using anti-theft bolts or welding the box in place. Always follow the manufacturer’s installation instructions.
Are generator boxes weatherproof?
Most metal and composite boxes are weather-resistant but not fully waterproof. They are designed to shed rain and snow while allowing airflow. Some have rubber seals and baffled vents to minimize water entry. For extreme weather, a fabric cover with a tent design may offer better rain protection.
Do generator boxes reduce noise?
Yes, to some extent. Rigid boxes with thick materials like steel or composite can dampen generator noise by a few decibels. Fabric covers offer minimal noise reduction. For significant noise reduction, look for boxes with sound-dampening insulation or consider a dedicated soundproof enclosure.
Our Verdict
After researching manufacturer specs and owner feedback, the DuraMax RB-12A takes our top spot for its balance of durability, security, and ventilation. It’s a reliable all-around choice for most travel trailer owners. If you prioritize weather protection and portability, the GenTent 620 is an excellent runner-up, especially for those who frequently camp in rainy conditions.
