6 Best Alternatives to the Relaxcabine Hard Shell Roof Cargo Box (2026)
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The Relaxcabine 14 cu ft hard shell roof box offers reliable dual-side access and tool-free installation for standard crossbars. If you need relaxcabine hard shell roof cargo box alternatives, you may want a different capacity, weight limit, or color. This guide compares 6 options that share key specifications with the original model.
We selected these products because their specs overlap with the Relaxcabine unit. You will find similar 14 to 15.5 cubic foot capacities and dual-side opening designs. Load capacities range from 110 to 165 pounds, allowing you to choose based on your gear weight. All listed boxes fit round, square, or aerodynamic crossbars. You can compare dimensions and shell materials to find the best fit for your vehicle roof rack system.
How these alternatives compare
Goplus 14 cu ft Dual-Side Opening Roof Box
The Goplus 14 cu ft model offers a higher load capacity of 165 lb, compared to the Relaxcabine’s 150 lb limit. This makes it suitable for heavier gear. It is slightly narrower at 31 inches wide, which may fit tighter roof rack spacing better than the Relaxcabine’s 32.5-inch width. It weighs less at 25 pounds, improving fuel efficiency slightly. You get the same dual-side opening for easy access. Choose this if you need to carry more weight without exceeding rack limits. The black finish provides a different aesthetic. It lacks the specific tool-free mounting details of the Relaxcabine but remains a robust hard shell option.
Ausum Motor 14 cu ft Dual-Side Box
The Ausum Motor box is significantly heavier at 45 pounds, adding 14.8 pounds to your roof load compared to the Relaxcabine. Its load capacity is lower at 110 lb, restricting heavy items. You gain a glossy black finish that resists fingerprints better than white. The dual-side opening remains a key feature for convenience. This unit is best for drivers with strong roof racks who prioritize color and do not need high weight limits. It sacrifices payload capability for a sturdy build. If you carry light luggage and camping gear, the lower weight limit is manageable. Avoid this if you transport heavy equipment or need maximum storage utility.
Runave 15.5 cu ft Dual-Side Roof Box
The Runave 15.5 cu ft box provides more interior volume than the Relaxcabine’s 14 cu ft. It is wider at 35.4 inches, requiring wider crossbar spacing. The length is shorter at 58.3 inches, which may suit smaller vehicles better. It shares the same 150 lb load capacity. The dual-side opening ensures easy access from either side. This option is ideal for those needing extra space but with a shorter footprint. The white finish matches the Relaxcabine. It does not mention tool-free installation, so you may need standard hardware. Choose this if your vehicle has wide crossbars and you prioritize volume over length.
CNSLCJR 14 cu ft Dual-Side Opening Roof Box
The CNSLCJR 14 cu ft model is nearly identical to the Relaxcabine in dimensions and weight. It shares the 32.5-inch width, 13.2-inch height, and 62.5-inch length. It also weighs 30.2 pounds. The dual-side opening offers the same access convenience. The main difference is the black color option. This is a practical choice if you prefer a darker finish that hides dirt better. It provides the same capacity and likely similar mounting requirements. Select this if you want the same form factor but with a different aesthetic. It is a direct alternative for those who like the Relaxcabine’s size but want a black exterior.
SHINEUX 14 Cu Ft Brown Roof Box
The SHINEUX 14 Cu Ft box matches the Relaxcabine’s dimensions and weight closely. It is 32.5 inches wide, 13.2 inches high, and 62.5 inches long. It weighs 30 pounds, slightly lighter than the Relaxcabine’s 30.2 pounds. The dual-side opening provides identical access. The brown finish offers a unique look compared to standard white or black options. This is a solid alternative if you want the same capacity and size but prefer a brown exterior. It likely shares the same mounting compatibility. Choose this if you value the specific dimensions and dual access but want a distinct color for your vehicle.
STMHOM 14 cu ft Hard Shell Roof Box
The STMHOM 14 cu ft box is longer at 66.9 inches, adding nearly 4.4 inches to the Relaxcabine’s length. It is narrower at 31.1 inches wide. It is heavier at 45.6 pounds, adding significant roof weight. The load capacity is not specified in the data, so assume it may be lower or similar. It features a dual-side opening for access. This model suits SUVs with longer roof racks. Choose this if you need more length for bulky items and have a rack that accommodates the extra span. The black finish is standard. Avoid this if your crossbars are spaced closely or if weight is a concern.
Quick picks
Our 7 picks
Relaxcabine 14 cu ft Hard Shell Roof Box
Best for: side access and tool-free setup
- Capacity
- 14 cu ft
- Shell Type
- ABS + PMMA
- Opening
- Dual-side
- Load Capacity
- 150 lb
- Water Resistance
- Waterproof
- Security
- Key lock
View on Amazon: Relaxcabine 14 cu ft Hard Shell Roof Box Affiliate link
This Relaxcabine roof box offers 14 cubic feet of cargo space and a 150 lb load capacity. It features a hard shell made from ABS and PMMA materials for durability. The dual-side opening design allows access from either side of your vehicle. It installs tool-free on round, square, or aerodynamic crossbars. This model suits families needing secure, weather-resistant storage for road trips.
Pros
- 14 cubic feet capacity with 150 lb load limit
- Dual-side opening with 15-inch passenger-side access
- Tool-free installation on most crossbar types
- Multi-point key lock system for security
- ABS + PMMA hard shell construction
Cons
- 14 cubic feet is smaller than 15.5 cu ft alternatives
- Fixed white color option only in this listing
- No mention of integrated bike or ski mounts
Good fit if
- You need quick access from the passenger side
- You drive a vehicle with round or square bars
- You want a tool-free setup for frequent use
Skip if
- You require more than 14 cubic feet of space
- You prefer a black or grey color finish
- You need integrated mounting for bikes or skis
Verdict: Relaxcabine 14 Cu Ft Dual-Side Hard Shell is a practical choice for travelers who prioritize side access and easy installation over maximum volume. It fits those with standard crossbars who need reliable, weatherproof storage for moderate loads.
Goplus 14 cu ft Dual-Side Opening Roof Box
Best for: side access and heavy loads
- Capacity
- 14 Cubic Feet
- Shell Type
- ABS and PC
- Opening
- Dual-side
- Load Capacity
- 165 lbs
- Water Resistance
- Waterproof
- Security
- double-lock design, super latch security
View on Amazon: Goplus 14 cu ft Dual-Side Opening Roof Box Affiliate link
The Goplus hard shell roof box offers 14 cubic feet of storage in a 63 by 31 by 15 inch shell. It features dual-side opening for easy access and a double-lock security system. The ABS and PC construction supports a 165 lb load. It mounts on racks up to 3.1 inches wide. This carrier suits drivers needing secure, weather-resistant storage with convenient side access.
Pros
- 14 cubic feet capacity
- Dual-side opening access
- Double-lock security design
- 165 lb load capacity
- ABS and PC shell
Cons
- 25 pound weight
- 31 inch width
- No app control
Good fit if
- You need side access for tight parking spots
- You carry heavy loads up to 165 lbs
- You want dual-lock security
Skip if
- You need more than 14 cubic feet
- Your crossbars exceed 3.1 inches wide
- You prefer a lighter carrier under 25 lbs
Verdict: Goplus 14 Cu Ft Dual-Side Hard Shell provides reliable dual-side access and high load capacity for secure travel storage.
Ausum Motor 14 cu ft Dual-Side Box
Best for: Side access with compatible roof rack spacing
- Capacity
- 14 cubic feet
- Shell Type
- Hard shell
- Opening
- Dual side
- Load Capacity
- 110 lbs
- Water Resistance
- Weather-tight seal
- Installation
- No special tools required
View on Amazon: Ausum Motor 14 cu ft Dual-Side Box Affiliate link
This Ausum Motor hard shell cargo box offers 14 cubic feet of storage and weighs 45 pounds. It features dual-side opening for convenient access from either side of your vehicle. The unit includes a weather-tight seal to protect your gear and a central locking mechanism for security. It supports a load capacity of 110 pounds. This model requires an inter-crossbar distance between 24.0 and 29.1 inches for proper installation.
Pros
- Dual-side opening for flexible access
- 14 cubic feet of hard shell storage
- Central locking system with key removal safety
- Weather-tight seal for rain protection
- No special tools required for installation
Cons
- 45-pound weight adds significant roof load
- Strict crossbar spacing requirement of 24.0 to 29.1 inches
- 110-pound load limit restricts heavy gear
Good fit if
- You need side access for tight parking spots
- Your roof rack crossbars fit the 24.0 to 29.1 inch range
- You want a hard shell with a weather-tight seal
Skip if
- Your crossbar spacing is outside the 24.0 to 29.1 inch range
- You frequently carry loads exceeding 110 pounds
- You prefer a lighter unit under 40 pounds
Verdict: Ausum Motor 14 Cu Ft Dual-Side Roof Box fits drivers who need flexible side access and have compatible roof rack spacing. It is a solid option for securing gear within its specific weight and dimension limits.
Runave 15.5 cu ft Dual-Side Roof Box
Best for: side access and narrow roof racks
- Capacity
- 15.5 Cubic Feet
- Shell Type
- ABS and PMMA
- Opening
- dual-sided
- Load Capacity
- 150 lbs
- Water Resistance
- waterproof
- Security
- 2 keys and 2 straps
View on Amazon: Runave 15.5 cu ft Dual-Side Roof Box Affiliate link
The Runave roof cargo box offers 15.5 cubic feet of storage with dual-side opening for convenient access. It measures 58.3 by 35.4 by 13 inches and supports up to 150 lbs. The hard shell uses ABS and PMMA materials for waterproof and UV-resistant protection. This design minimizes fuel consumption and noise. It fits vehicles with roof racks between 17.1 and 34.8 inches wide.
Pros
- Dual-side opening for easy access from either side
- 15.5 cubic feet capacity with 150 lbs load limit
- Waterproof and UV-resistant ABS and PMMA shell
- Aerodynamic design reduces noise and fuel consumption
Cons
- 15.5 cubic feet is smaller than the 14 cubic feet models on this list
- 150 lbs load capacity is lower than typical hard shell limits
- Only one height option listed at 13 inches
Good fit if
- You need access from both sides of the vehicle
- You drive a vehicle with a roof rack between 17.1 and 34.8 inches wide
- You prioritize a low-profile 13-inch height for clearance
Skip if
- You require a load capacity higher than 150 lbs
- You need a taller profile for maximum storage volume
- Your roof rack crossbars exceed 3 inches in width
Verdict: Runave 15.5 Cu Ft Dual-Side Hard Shell Roof Box suits drivers who need side access and have narrower roof racks. It offers reliable weather protection but limits you to a 150 lbs load.
CNSLCJR 14 cu ft Dual-Side Opening Roof Box
Best for: passenger-side access and easy setup
- Capacity
- 14 cu ft
- Shell Type
- Hard shell (ABS and PMMA)
- Opening
- Dual-side
- Load Capacity
- 150 lbs
- Security
- Security lock
- Installation
- Tool-free
View on Amazon: CNSLCJR 14 cu ft Dual-Side Opening Roof Box Affiliate link
This CNSLCJR hard shell roof box offers 14 cubic feet of storage with dimensions of 62.52 x 32.48 x 13.19 inches. It features dual-side opening for easy access and a 150 lbs load capacity. The tool-free installation fits most roof racks. You get durable ABS and PMMA construction. This unit suits travelers needing secure, weather-resistant cargo space without complex setup.
Pros
- Dual-side opening for convenient passenger access
- 150 lbs maximum load capacity
- Tool-free quick installation on most racks
- ABS and PMMA hard shell construction
Cons
- 150 lbs load capacity is lower than many competitors
- 14 cubic feet capacity is smaller than some alternatives
- Only passenger-side opening available
Good fit if
- You need easy access from the passenger side
- You want tool-free installation on existing racks
- You require a hard shell for weather protection
Skip if
- You need more than 14 cubic feet of space
- You require a load capacity over 150 lbs
- You prefer opening from both sides of the vehicle
Verdict: CNSLCJR 14 Cu Ft Dual-Side Hard Shell Roof Box provides secure storage for passengers who value side access. It fits buyers who prioritize easy setup and moderate capacity over maximum weight limits.
SHINEUX 14 Cu Ft Brown Roof Box
Best for: Dual-side access needs
- Capacity
- 14 cu ft
- Shell Type
- ABS
- Opening
- Dual-side
- Load Capacity
- 150 lb
- Water Resistance
- Waterproof
- Security
- Key lock
View on Amazon: SHINEUX 14 Cu Ft Brown Roof Box Affiliate link
This SHINEUX cargo box offers 14 cubic feet of storage in a brown ABS hard shell. It measures 62.52 inches long and 32.48 inches wide. The dual-side opening design allows access from either side of your vehicle. It supports up to 150 pounds of gear and includes a key lock for security. This unit weighs 30 pounds and installs without tools.
Pros
- Dual-side opening for flexible access
- 14 cubic feet of total storage
- 150 pound load capacity
- Tool-free installation process
- Key lock security system
Cons
- Brown finish may not match all vehicles
- 150 pound limit restricts heavy gear
- No aerodynamic wing design mentioned
Good fit if
- You need access from both sides of your car
- You want a tool-free setup
- You carry standard luggage and sports gear
Skip if
- You require a higher weight capacity
- You prefer a different color option
- You need an aerodynamic low-drag profile
Verdict: SHINEUX 14 Cu Ft Hard Shell Roof Box provides dual-side access and a 150 pound limit for standard travel needs. It suits drivers who prioritize easy loading from either side of their vehicle over aerodynamic efficiency.
STMHOM 14 cu ft Hard Shell Roof Box
Best for: families needing side access
- Capacity
- 14 cu ft
- Shell Type
- Hard shell ABS
- Opening
- Dual side
- Load Capacity
- 135 lb
- Security
- Lockable
- Vehicle Compatibility
- Square, round, and aerodynamic crossbars
View on Amazon: STMHOM 14 cu ft Hard Shell Roof Box Affiliate link
This STMHOM roof box offers 14 cubic feet of storage with a 135 lb load capacity. Its hard ABS shell protects gear from weather and debris. The dual-side opening design allows access from either side of the vehicle, which is useful in tight parking spots. It fits square, round, and aerodynamic crossbars. The low-profile shape helps reduce wind noise at highway speeds.
Pros
- Dual-side opening for easier loading
- 14 cubic feet capacity
- Lockable hard ABS shell
- Fits multiple crossbar types
Cons
- Heavier at 45.6 pounds
- Longer at 66.9 inches
- Lower 135 lb load limit
Good fit if
- You need access from both sides
- You have square or round bars
- You carry bulky camping gear
Skip if
- You have very short roof racks
- You need to carry over 135 lbs
- You prefer lighter carriers
Verdict: STMHOM 14 Cu Ft Dual-Side Hard Shell suits drivers who value side access and rigid protection. It fits well on SUVs with standard crossbars. Buyers needing higher weight limits should look elsewhere.
Specifications side by side
| Spec | Relaxcabine 14 cu ft Hard Shell Roof Box | Goplus 14 cu ft Dual-Side Opening Roof Box | Ausum Motor 14 cu ft Dual-Side Box | Runave 15.5 cu ft Dual-Side Roof Box | CNSLCJR 14 cu ft Dual-Side Opening Roof Box | SHINEUX 14 Cu Ft Brown Roof Box | STMHOM 14 cu ft Hard Shell Roof Box |
|---|---|---|---|---|---|---|---|
| Capacity | 14 cu ft | 14 Cubic Feet | 14 cubic feet | 15.5 Cubic Feet | 14 cu ft | 14 cu ft | 14 cu ft |
| Shell Type | ABS + PMMA | ABS and PC | Hard shell | ABS and PMMA | Hard shell (ABS and PMMA) | ABS | Hard shell ABS |
| Opening | Dual-side | Dual-side | Dual side | dual-sided | Dual-side | Dual-side | Dual side |
| Load Capacity | 150 lb | 165 lbs | 110 lbs | 150 lbs | 150 lbs | 150 lb | 135 lb |
| Water Resistance | Waterproof | Waterproof | Weather-tight seal | waterproof | not stated | Waterproof | not stated |
| Security | Key lock | double-lock design, super latch security | not stated | 2 keys and 2 straps | Security lock | Key lock | Lockable |
| Installation | Tool-free | 4 quick connect anchors | No special tools required | no additional tools required | Tool-free | Tool-free | not stated |
| Vehicle Compatibility | Round, square, most aero crossbars | not stated | Inter-crossbar distance 24.0-29.1 in | not stated | Cross bars up to 3 in wide | not stated | Square, round, and aerodynamic crossbars |
| Dimensions | 62.5 x 32.48 x 13.19 in | 63 x 31 x 15 in | not stated | 58.3 x 35.4 x 13 in | 62.52 x 32.48 x 13.19 in | 62.52 x 32.48 x 13.19 in | 66.9 x 31.1 x 12.9 in |
| Recommended Use | Luggage, gear, camping equipment | not stated | not stated | not stated | Suitcases, camping gear, ski equipment | Luggage, sports gear, seasonal items | not stated |
| Vehicle Type | not stated | Car | Car | Car | Car, SUV, Truck | not stated | Car, SUV |
| Size | 14 Cu Ft White | not stated | 14 Cubic Feet | 15.5 Cubic Feet | 14 Cubic Feet | 14 Cubic Feet | 66.9"L x 31.1"W x 12.9"H |
| Mount Type | not stated | Roof Mount | Roof Mount | Roof Mount | Roof Mount | Roof Mount | Roof Mount |
| Lockable | Lockable | not stated | not stated | not stated | not stated | not stated | Lockable |
| Weight | 30.2 pounds | 25 pounds | 45 pounds | not stated | 30.2 pounds | 30 pounds | 45.6 pounds |
| Color | White | Black | Glossy Black | WHITE | Black-5 | Brown | Black |
| Model | Cargo Box 14 Cu Ft White | not stated | Glossy Black | WHITE | Hard Shell Roof Cargo Box-365833 | BR625 | oHLA5bHKvL101rX5UUoG-QT0Bfs |
When you pack smaller devices alongside vehicle cargo, specs for pocketbook shell alternatives show casing dimensions and material weights.
Frequently asked questions
Which alternative has the highest weight limit?
The Goplus 14 cu ft Dual-Side Opening Roof Box supports up to 165 lb. This exceeds the 150 lb limit found on the Relaxcabine and several other models. It is the strongest option for carrying heavy gear. The Ausum Motor model offers a lower 110 lb limit, so check your load requirements carefully before choosing.
Are all these boxes available in dual-side opening?
Yes, every listed alternative features dual-side opening. This design allows you to access cargo from either side of your vehicle. It is useful for loading items when parked close to other cars or obstacles. You do not need to move your vehicle to open the lid from the passenger or driver side.
Which option is best for narrow roof racks?
The Runave 15.5 cu ft Dual-Side Roof Box is the widest at 35.4 inches. However, the Goplus model is the narrowest at 31 inches wide. If your roof rack spacing is tight, the Goplus may fit better. The STMHOM model is also narrow at 31.1 inches wide, providing another slim option for your vehicle.
Do any of these boxes come in brown?
The SHINEUX 14 Cu Ft Brown Roof Box is available in brown. Most other options are white, black, or glossy black. The Relaxcabine and Runave models come in white. The Goplus, Ausum Motor, CNSLCJR, and STMHOM models are offered in black tones. Choose based on your vehicle color preference.
Which box is the lightest to install?
The Goplus 14 cu ft model is the lightest at 25 pounds. The SHINEUX box weighs 30 pounds. The Relaxcabine and CNSLCJR models both weigh 30.2 pounds. Heavier options like the Ausum Motor and STMHOM boxes weigh 45 pounds or more. A lighter box is easier to lift onto the roof rack alone.
Is there a model suitable for SUVs?
The STMHOM 14 cu ft Hard Shell Roof Box lists SUV as a recommended vehicle type. It is designed for travel and camping use on SUVs with standard crossbars. Other models list Car as the primary vehicle type, though they may physically fit on SUVs. Check your roof rack compatibility before purchasing.
How long is the longest roof box listed?
The STMHOM 14 cu ft box is the longest at 66.9 inches. The Ausum Motor model is not listed with a length, but the Relaxcabine and CNSLCJR are 62.5 inches long. The Runave model is shorter at 58.3 inches. Measure your vehicle roof to ensure the longest models will not overhang excessively.