ALMULOO 15 Cubic Roof Cargo Box Alternatives: 6 Similar Picks Compared

How each alternative compares

Relaxcabine 13 cu ft Hard Shell Roof Box

The Relaxcabine 13 cu ft box offers 13 cubic feet of capacity, which is two cubic feet less than the ALMULOO. It shares the dual-side opening feature, allowing you to load gear from either side. This model measures 56.3 inches in length, making it slightly longer but narrower at 30.3 inches wide compared to the ALMULOO’s 32-inch width. It weighs 27.8 pounds, which is lighter than the ALMULOO. The hard shell construction provides secure, lockable storage. You should choose this option if you prefer a lighter carrier and do not need the extra volume of the 15 cubic foot model. It is ideal for standard road trips where dual access is a priority.

Pidock 13 cu ft Hard Shell Roof Box

The Pidock 13 cu ft box provides 13 cubic feet of storage, reducing capacity by two cubic feet compared to the ALMULOO. It features dual-side opening for convenient access from both sides of the vehicle. This unit is 56.3 inches long and 30.3 inches wide, matching the Relaxcabine dimensions. A key difference is the weight; the Pidock weighs 130 pounds, which is significantly heavier than the ALMULOO. It is lockable and designed for hard shell protection. You might pick this model if tool-free setup is your main concern and you are not deterred by the substantial weight. It suits moderate gear loads on standard crossbars where easy installation matters more than low weight.

FinerFurnis 12.4 Cu Ft Hard Shell Roof Box

The FinerFurnis 12.4 cu ft box offers 12.4 cubic feet of capacity, which is 2.6 cubic feet less than the ALMULOO. It retains the dual-side opening feature for flexible loading. This model is 57.5 inches long, making it longer than the ALMULOO, but narrower at 30.9 inches wide. It weighs 32.2 pounds, which is comparable to the ALMULOO. The hard shell design ensures waterproof storage and secure locking. You should consider this alternative if you need a slightly smaller footprint but still value side access. It is a practical choice for drivers who prioritize weatherproof protection and do not require the maximum volume available in the 15 cubic foot category.

VUMALL 21 Cu Ft Dual-Side Roof Box

The VUMALL 21 cu ft box provides 21 cubic feet of capacity, which is six cubic feet more than the ALMULOO. It also features dual-side opening for easy access. This unit is significantly larger, measuring 72.8 inches in length and 34.3 inches in width. It weighs 36.9 pounds, which is heavier than the ALMULOO. The lockable design ensures secure storage for larger loads. You should choose this model if you need maximum cargo volume for family trips or extensive gear. It is best for buyers with wide crossbars who can accommodate the larger dimensions. The increased capacity makes it suitable for those who prioritize space over the compact footprint of the 15 cubic foot option.

STMHOM 14 cu ft Hard Shell Roof Box

The STMHOM 14 cu ft box offers 14 cubic feet of capacity, which is one cubic foot less than the ALMULOO. It features dual-side opening for convenient access from both sides. This model measures 66.9 inches in length, making it longer than the ALMULOO, but narrower at 31.1 inches wide. It weighs 45.6 pounds, which is heavier than the ALMULOO. The hard shell construction provides rigid protection and secure locking. You should pick this option if you prefer a mid-size carrier with dual access. It is ideal for families who value rigid protection and do not need the full 15 cubic feet of volume. The slightly smaller capacity may suffice for standard travel needs.

Asinking 20 cu ft Waterproof Roof Bag

The Asinking 20 cu ft cargo bag provides 20 cubic feet of capacity, which is five cubic feet more than the ALMULOO. Unlike the hard shell box, this is a soft-sided bag that mounts to the roof. It measures 52 inches in length, 40 inches in width, and 18.5 inches in height. It is lockable for security. This option is best for travelers who need high capacity on bare roofs without a rack. It sacrifices the aerodynamic efficiency and rigid protection of the ALMULOO for increased versatility and space. You should choose this model if you prioritize maximum storage volume and do not have a roof rack. It is suitable for those who need flexible storage solutions for large loads.

Quick picks

Our 7 picks

1 Best overall

ALMULOO 15 cu ft Dual-Side Opening Roof Box

Best for: Dual-side access and weather protection

Capacity

15 cubic feet

Shell Type

ABS

Opening

Dual-Side

Water Resistance

Protects from harsh weather conditions

Security

Secure key lock

Dimensions

53 x 32 x 15 in

View on Amazon: ALMULOO 15 cu ft Dual-Side Opening Roof Box

The ALMULOO 15 Cu Ft Roof Box offers 15 cubic feet of storage in a 53 by 32 by 15 inch ABS shell. You get dual-side opening for easy access from either side of the vehicle. A secure key lock protects your gear. It fits all cars with roof racks. This carrier handles rain and freezing temperatures well. It suits you if you need durable, weather-resistant storage with convenient access points.

Pros

• 15 cubic feet of interior capacity
• Dual-side opening design for flexible access
• Secure key lock for luggage safety
• Hard ABS plastic shell resists weather
• Universal fit for cars with roof racks

Cons

• 15 cubic feet capacity is smaller than the 21 Cu Ft option on this list
• Instructions are not included in the package
• Only one color option available

Good fit if

• You need dual-side access for loading gear in tight parking spots
• You want a hard shell that protects against rain and freezing temperatures
• You have a standard roof rack and need 15 cubic feet of space

Skip if

• You require more than 15 cubic feet of storage capacity
• You prefer a carrier with included assembly instructions

Verdict: ALMULOO 15 Cu Ft Dual-Side Roof Box provides reliable weather protection and convenient dual access for drivers who prioritize secure, easy-to-load storage over maximum volume.

2 Best premium

Relaxcabine 13 cu ft Hard Shell Roof Box

Best for: Dual-side access and security

Capacity

13 cu ft

Shell Type

ABS and PMMA

Opening

dual-side

Load Capacity

130 lbs

Water Resistance

weather-resistant

Security

built-in locking system

View on Amazon: Relaxcabine 13 cu ft Hard Shell Roof Box

This Relaxcabine cargo box offers 13 cubic feet of storage in a durable ABS and PMMA hard shell. It features dual-side opening for easy access and a secure lock system. The unit weighs 27.8 pounds and supports up to 130 lbs of gear. It fits most crossbars and is designed for family trips and camping. You get weather-resistant protection for your belongings.

Pros

• Dual-side opening for convenient loading
• Lockable lid with secure locking system
• Tool-free installation on most crossbars
• Durable ABS and PMMA hard shell

Cons

• 13 cubic feet capacity is smaller than larger alternatives
• Weather-resistant rather than fully waterproof
• No mention of aerodynamic drag reduction features

Good fit if

• You need easy access from both sides of the vehicle
• You prefer a hard shell for better durability
• You want a lockable box for secure storage

Skip if

• You require more than 13 cubic feet of space
• You need a fully waterproof seal for heavy rain
• You want a larger 21 cubic feet option

Verdict: Relaxcabine 13 Cu Ft Hard Shell Roof Box is a solid mid-size option for those who value dual-side access and security. It suits buyers who do not need maximum volume but want a sturdy, lockable carrier for standard road trips.

3 Best budget

Pidock 13 cu ft Hard Shell Roof Box

Best for: Dual-side access and tool-free setup

Capacity

13 cu ft

Shell Type

ABS and PMMA

Opening

Dual side

Load Capacity

130 lb

Installation

Tool-free

Dimensions

55.91 x 29.53 x 14.96 in

View on Amazon: Pidock 13 cu ft Hard Shell Roof Box

The Pidock 13 Cu Ft roof cargo box offers 13 cubic feet of storage and a 130 lb load capacity. Its hard shell uses ABS and PMMA materials for durability. You get dual-side opening access, with the passenger side opening up to 13 inches wide. Tool-free installation fits crossbars up to 3 inches wide. This white carrier measures 56.3 inches long and is lockable for secure transport.

Pros

• 13 cubic feet of internal storage space
• Dual-side opening with 13-inch passenger side access
• Tool-free installation for crossbars up to 3 inches wide
• ABS and PMMA hard shell for UV protection
• Secure key locking system

Cons

• 13 cubic feet capacity is smaller than the 15 Cu Ft ALMULOO and 21 Cu Ft VUMALL options
• 130 lb load limit is lower than typical heavy-duty carriers
• No mention of aerodynamic drag reduction features

Good fit if

• You need dual-side access for tight parking spots
• You want tool-free setup on existing crossbars
• You require a lockable hard shell for security

Skip if

• You need maximum capacity over 15 cubic feet
• You prefer a black or gray finish
• You require a load capacity exceeding 130 lbs

Verdict: Pidock 13 Cu Ft Hard Shell Roof Box suits buyers who prioritize dual-side access and tool-free installation over maximum volume. It is a practical option for moderate gear loads on standard crossbars.

4 Also great

FinerFurnis 12.4 Cu Ft Hard Shell Roof Box

Best for: Drivers needing side access and waterproof storage

Capacity

12.4 Cu.Ft

Shell Type

ABS

Opening

dual-side

Load Capacity

165 lbs

Water Resistance

waterproof

Security

locking system with two keys

View on Amazon: FinerFurnis 12.4 Cu Ft Hard Shell Roof Box

This hard shell cargo box offers 12.4 cubic feet of waterproof storage. It mounts tool-free on square, round, aero, or factory crossbars. The dual-side opening allows access from either side using the included locking system. Built from impact-resistant ABS, it weighs 32.2 pounds and supports up to 165 pounds of gear. It suits drivers needing secure, weatherproof storage for road trips.

Pros

• 12.4 cubic feet of capacity
• Dual-side opening for easy access
• Tool-free installation on most crossbars
• Waterproof ABS hard shell construction
• Lockable with two included keys

Cons

• 12.4 cubic feet is smaller than the 15 cubic feet ALMULOO model
• 32.2 pound weight adds bulk to roof load
• 165 pound load limit may restrict heavy cargo

Good fit if

• You need dual-side access for loading from the curb
• You drive an SUV or car with standard crossbars
• You prioritize waterproof protection for your gear

Skip if

• You require more than 12.4 cubic feet of space
• You prefer a lighter carrier under 30 pounds
• You need a model larger than 17.7 cubic feet

Verdict: FinerFurnis 12.4 Cu Ft Dual-Side Roof Box provides secure, weatherproof storage for drivers who value side access and easy mounting. It fits buyers with standard roof racks who do not need the largest available capacity.

5 Also great

VUMALL 21 Cu Ft Dual-Side Roof Box

Best for: families needing maximum cargo volume

Capacity

21 cubic feet

Shell Type

ABS and PMMA

Opening

Dual-side

Load Capacity

150 lbs

Water Resistance

All-weather

Installation

Tool-free

View on Amazon: VUMALL 21 Cu Ft Dual-Side Roof Box

The VUMALL 21 cubic foot roof box offers ample storage for large gear. It features dual-side opening for flexible access and a 150-pound load capacity. The shell combines ABS and PMMA materials for all-weather protection. It mounts tool-free to crossbars spaced between 20.86 and 38.60 inches. This carrier suits families needing extra space for camping or travel.

Pros

• 21 cubic feet capacity
• Dual-side opening
• 150 lbs load limit
• Tool-free installation
• ABS and PMMA shell

Cons

• Heavier at 36.9 pounds
• Larger footprint at 72.8 inches
• No mention of aerodynamic noise reduction

Good fit if

• You need maximum cargo space
• You want side access from both vehicles
• You have wide crossbar spacing

Skip if

• You drive a compact vehicle
• You prioritize low wind noise
• You need lightweight storage

Verdict: VUMALL 21 Cu Ft Dual-Side Roof Box provides high capacity and flexible access for large loads, making it ideal for families with wide crossbars who need maximum storage volume.

6 Best 14 cubic feet

STMHOM 14 cu ft Hard Shell Roof Box

Best for: Dual-side access and rigid protection

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

The STMHOM 14 cubic feet roof cargo box features a hard shell ABS construction for rigid protection. It offers dual-side opening access and supports up to 135 pounds of load. The unit measures 66.9 inches long and 12.9 inches high. It fits square, round, and aerodynamic crossbars. This carrier suits travelers needing secure, weather-resistant storage for family gear or camping equipment.

Pros

• 14 cubic feet interior capacity
• Dual-side opening for easy access
• Hard shell ABS construction
• 135 lb load capacity
• Lockable security design

Cons

• 45.6 pounds weight adds roof load
• 12.9 inch height may limit clearance
• No mention of integrated mounting hardware

Good fit if

• You need dual-side access for parking lot loading
• You have square, round, or aero crossbars
• You require a lockable hard shell for security

Skip if

• You need more than 14 cubic feet of space
• Your vehicle has low roof clearance
• You prefer a soft-sided cargo bag

Verdict: STMHOM 14 Cu Ft Hard Shell Roof Box is a solid mid-size option for families who value dual-side access and rigid protection over maximum capacity.

7 Best 20 cubic feet

Asinking 20 cu ft Waterproof Roof Bag

Best for: high-capacity storage on bare roofs

Capacity

20 cu ft

Shell Type

900D PVC tarpaulin

Water Resistance

100% waterproof

Security

Lock

Installation

Metal ring strap design

Vehicle Compatibility

With or without roof rack

View on Amazon: Asinking 20 cu ft Waterproof Roof Bag

This soft-sided carrier offers 20 cubic feet of storage in a 52 x 40 x 18.5-inch footprint. It uses 900D PVC tarpaulin with triple-reinforced seams for waterproof protection. The design fits vehicles with or without roof racks, using metal ring straps for installation. It includes door hook pads to protect your car's paint. This bag suits those needing high capacity without permanent hard-shell mounting hardware.

Pros

• 20 cubic feet capacity
• Fits vehicles with or without roof racks
• 900D PVC tarpaulin construction
• Lockable for security
• Protective door hook pads

Cons

• Soft shell is less aerodynamic than hard plastic
• Manual strap installation required
• No integrated rigid frame

Good fit if

• You need maximum storage volume
• Your car lacks roof rails
• You want to protect your paint from rack hardware

Skip if

• You prefer a rigid hard-shell design
• You want a low-profile aerodynamic shape
• You need a permanent fixed mount

Verdict: Asinking 20 Cu Ft Rooftop Cargo Bag provides ample space for large loads while remaining compatible with bare roofs. It is best for travelers prioritizing capacity and versatility over aerodynamic efficiency.

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