6 Best Alternatives to the Curtainboro 19.4 Cu ft Hard (2026)
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You might be looking for curtainboro 19 4 cu ft hard alternatives if this specific model does not match your exact needs. The Curtainboro box offers a large 19.4 cubic feet capacity and dual-side opening for easy access. Its 165 lb load limit and waterproof ABS shell provide substantial storage and weather protection. However, its 68.9-inch length may not fit vehicles with shorter roof racks. You might also prefer a different height or weight profile for better aerodynamics or fuel efficiency.
The 6 alternatives listed here were chosen because their specifications overlap with the original product. Each option shares key features like hard shell construction and roof mount compatibility. Some offer smaller volumes for tighter spaces, while others provide larger capacities for extended trips. You can compare dimensions, load limits, and opening styles to find the best fit. This guide focuses strictly on published specs to help you make an informed decision without bias.
Our top pick: Curtainboro 19.4 cu ft Dual-Side Opening Box.
How each alternative compares
GarveeTech 12 cu ft Dual-Side Opening Roof Box
The GarveeTech 12 cu ft box shares the dual-side opening and 165 lb capacity of the Curtainboro. It gives up volume, offering 12 cubic feet instead of 19.4. The dimensions are 54.3 inches long and 13.4 inches high, making it shorter and taller than the Curtainboro. This profile suits vehicles with tighter roof space or lower clearance. You gain a slightly narrower width of 31.5 inches. It is ideal if you need side access but have less cargo to carry. The hard shell provides similar weather protection. Choose this if compact size matters more than maximum storage volume for your weekend trips.
Goplus 14 cu ft Dual-Side Opening Roof Box
The Goplus 14 cu ft option also features dual-side opening and a 165 lb load capacity. It provides less interior space than the Curtainboro’s 19.4 cubic feet. The dimensions are 63 inches long and 15 inches high. It is shorter but taller than the Curtainboro. The width is 31 inches, which is narrower. This model weighs only 25 pounds, significantly lighter than the Curtainboro’s 39.7 pounds. Lighter weight can help if your vehicle has a lower roof load rating. It fits standard rack widths well. Pick this alternative if you prioritize easier handling and moderate storage needs over the largest possible capacity for family road trips.
STMHOM 14 cu ft Hard Shell Roof Box
The STMHOM 14 cu ft box matches the Curtainboro with dual-side access and a 165 lb load limit. It offers less volume, at 14 cubic feet. The length is 62.2 inches, making it shorter than the Curtainboro. The height is 13.4 inches, which is taller. The width is 31.5 inches. It weighs 44.8 pounds, heavier than the Curtainboro. This model is lockable, ensuring secure storage. It is designed for both cars and SUVs. Choose this if you need a durable ABS shell with side access but have less gear to transport. It is a solid mid-size choice for travelers who do not require the largest available volume.
Maxsa Innovations 17 cu ft Hard Shell Cargo Box
The Maxsa Innovations 17 cu ft box differs by lacking dual-side opening. It offers 17 cubic feet, less than the Curtainboro’s 19.4. The load capacity is 165 lb, matching the original. The dimensions are 55.1 inches long and 16.1 inches high. It is shorter but taller and wider at 35 inches. It weighs 35.3 pounds, lighter than the Curtainboro. This aerodynamic design suits drivers who value secure storage over easy side access. It is ideal for standard luggage and highway travel. Pick this if you do not need to open the box from the side and prefer a lighter, narrower profile for your vehicle roof.
Relaxcabine 26 Cu Ft Hard Shell Roof Cargo Box
The Relaxcabine 26 cu ft box provides significantly more volume than the Curtainboro. It has dual-side opening and a 150 lb load limit, which is lower. The dimensions are 87.2 inches long and 17.4 inches high. It is much longer and taller. The width is 38.2 inches. It weighs 52.7 pounds, heavier than the Curtainboro. This extra-large size suits travelers with ample roof space who need to haul large loads. It is lockable for security. Choose this alternative if you prioritize maximum storage volume and side access over weight limits and compact dimensions. It fits those who need to carry extensive gear for long trips.
PM Performotor 15 cu ft Dual-Side Box
The PM Performotor 15 cu ft box features dual-side opening but has a lower 110 lb load limit. It offers 15 cubic feet, less than the Curtainboro. The dimensions are 80 inches long and 13 inches high. It is longer but shorter than the Curtainboro. The width is 30 inches, narrower. It does not list a weight. This model suits drivers who prioritize side access and moderate load needs over maximum capacity. It fits well on vehicles with cross bars. Pick this if you need a hard shell for weekend gear and do not require the highest weight limit. It is a practical option for standard car roofs.
Quick picks
Our 7 picks
Curtainboro 19.4 cu ft Dual-Side Opening Box
Best for: families needing high capacity and side access
- Capacity
- 19.4 cu ft (17 cu ft interior)
- Shell Type
- Hard shell, ABS
- Opening
- Dual-side
- Load Capacity
- 165 lb
- Water Resistance
- Waterproof
- Security
- Locking system with 2 keys
View on Amazon: Curtainboro 19.4 cu ft Dual-Side Opening Box
This hard shell cargo box offers 19.4 cubic feet of interior space with a 165 lb load capacity. Its dual-side opening design allows access from either side of your vehicle, which is useful in tight parking spots. The waterproof ABS shell protects gear during travel. It fits most cars and SUVs with compatible roof racks. You get two keys for the locking system.
Pros
- 19.4 cubic feet storage volume
- 165 lb load capacity
- Dual-side opening for easy access
- Waterproof ABS hard shell construction
- Includes two keys for locking
Cons
- 39.7 lb weight adds to roof load
- 11.8 inch height may limit clearance
- No mention of aerodynamic drag reduction metrics
Good fit if
- You need side access in tight spaces
- You carry heavy gear up to 165 lb
- You want waterproof protection for luggage
Skip if
- You require a slim profile under 11 inches
- You have a roof load limit below 40 lb
- You prefer a single-side opening design
Verdict: Curtainboro 19.4 Cu Ft Hard Shell Roof Box provides ample space and convenient dual-side access for families. It suits travelers who prioritize storage volume and weather protection over minimal weight.
GarveeTech 12 cu ft Dual-Side Opening Roof Box
Best for: Dual-side access with 165 lb capacity
- Capacity
- 12 cu ft (340 L)
- Shell Type
- Hard shell ABS
- Opening
- Dual-sided
- Load Capacity
- 165 lb
- Water Resistance
- Waterproof
- Security
- 2 keys and 2 straps
View on Amazon: GarveeTech 12 cu ft Dual-Side Opening Roof Box
This hard shell cargo box offers 12 cubic feet of storage with a 165 lb load capacity. It features dual-side opening for easy access from either side of your vehicle. The ABS construction is waterproof and UV-resistant. It weighs 39 pounds and fits all roof racks. This model suits travelers needing secure, weather-protected storage without needing large volume.
Pros
- Dual-side opening for convenient access
- 165 lb maximum load capacity
- Waterproof and UV-resistant ABS shell
- Includes 2 keys and 2 straps
Cons
- 12 cubic feet capacity is smaller than the 19.4 cu ft standard
- No mention of aerodynamic noise reduction specs
- Includes only a one-year warranty
Good fit if
- You need dual-side access for tight parking spots
- You have a roof rack and need 165 lb capacity
- You want a compact 12 cu ft box
Skip if
- You require more than 12 cubic feet of space
- You need a capacity higher than 165 lb
- You prefer a single-side opening mechanism
Verdict: GarveeTech 12 Cu Ft Dual-Side Hard Shell provides reliable 165 lb storage with convenient dual-side access. It fits buyers who prioritize easy loading and weather protection over maximum volume.
Goplus 14 cu ft Dual-Side Opening Roof Box
Best for: Dual-side access and waterproof security
- 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
The Goplus 14 cubic feet hard shell roof box offers dual-side opening for convenient access from either side of your vehicle. It features a robust ABS and PC shell with a 165 lb load capacity. The 63-inch length fits most standard crossbars. This model suits drivers who need secure, weather-resistant storage for road trips without sacrificing interior passenger space.
Pros
- Dual-side opening for easy access
- 165 lb load capacity
- Waterproof ABS and PC shell
- Double-lock security system
Cons
- 14 cubic feet capacity is smaller than the 19.4 cu ft competitors
- 25 lb weight adds to roof load
- Limited to 63-inch length for some wide vehicles
Good fit if
- You need dual-side access for tight parking spots
- You have standard 17 to 22.8 inch wide racks
- You prioritize waterproof security over maximum volume
Skip if
- You require over 19 cubic feet of storage
- Your crossbars exceed 3.1 inches in width
- You need a longer box for bulky gear
Verdict: Goplus 14 Cu Ft Dual-Side Hard Shell fits drivers who value convenient dual-side access and waterproof security over maximum cargo volume. It is a solid choice for standard rack widths and moderate storage needs.
STMHOM 14 cu ft Hard Shell Roof Box
Best for: Dual-side access and durable hard shell storage
- Capacity
- 14 cu ft
- Shell Type
- Hard shell ABS
- Opening
- Dual side
- Load Capacity
- 165 lb
- Security
- Lockable
- Vehicle Compatibility
- Square, round, and aerodynamic crossbars
This STMHOM rooftop cargo box offers 14 cubic feet of storage with a 165 lb load capacity. It features a hard shell ABS construction for durability and dual-side opening for easier access. The unit measures 62.2 by 31.5 by 13.4 inches and weighs 44.8 pounds. It fits square, round, and aerodynamic crossbars. You should choose this if you need secure, weather-resistant storage for SUVs or cars.
Pros
- Dual-side opening for convenient access from either side of the vehicle
- Hard shell ABS construction provides rigid protection against road debris and weather
- 165 lb load capacity accommodates bulky gear and suitcases
- Compatible with square, round, and aerodynamic crossbars
Cons
- 14 cubic feet capacity is smaller than the 19.4 cu ft option leading the list
- 44.8 pound weight adds significant bulk to the roof rack
- No mention of integrated mounting hardware or specific crossbar compatibility details
Good fit if
- You need dual-side access for loading in tight parking spaces
- You have an SUV or car with standard roof rack crossbars
- You prioritize hard shell durability over maximum internal volume
Skip if
- You require more than 14 cubic feet of storage space
- You are looking for a lighter unit to reduce roof load
- You need a box that fits without additional mounting hardware
Verdict: STMHOM 14 Cu Ft Hard Shell Rooftop Cargo Box is a solid mid-size option for travelers who value dual-side access and durable ABS construction. It suits buyers who need reliable storage for family road trips but do not require the largest available volume.
Maxsa Innovations 17 cu ft Hard Shell Cargo Box
Best for: Standard luggage and aerodynamic efficiency
- Capacity
- 17 cu ft
- Shell Type
- Hard shell ABS
- Opening
- Dual-side
- Load Capacity
- 165 lbs
- Water Resistance
- Waterproof
- Vehicle Compatibility
- Cars and SUVs with roof rack
View on Amazon: Maxsa Innovations 17 cu ft Hard Shell Cargo Box
This Maxsa Innovations cargo box offers 17 cubic feet of storage and a 165 lb load capacity. Its hard shell construction protects gear from weather. The aerodynamic design helps reduce wind noise and drag. It fits most cars and SUVs with roof racks. You get two keys for security. This box is a practical option for families needing reliable extra space for road trips.
Pros
- 17 cubic feet of storage space
- 165 lb weight capacity
- Aerodynamic shape reduces wind noise
- Includes two keys for locking
Cons
- Smaller capacity than the 19.4 cu ft alternative
- No dual-side opening feature
- Heavier build at 35.3 pounds
Good fit if
- You need a secure, weatherproof box for standard luggage
- You want a single-side opening design for easier access
- You prioritize aerodynamic efficiency over maximum volume
Skip if
- You require more than 17 cubic feet of space
- You need to access cargo from both sides of the vehicle
- You prefer a lighter carrier under 30 pounds
Verdict: Maxsa Innovations 17 Cu Ft Hard Shell is a solid choice for drivers who value secure, aerodynamic storage over maximum volume. It suits those who do not need dual-side access or larger capacities.
Relaxcabine 26 Cu Ft Hard Shell Roof Cargo Box
Best for: large loads and tight parking spots
- Capacity
- 26 Cu Ft
- Shell Type
- ABS+PC composite
- Opening
- dual-side
- Load Capacity
- 150 lbs
- Water Resistance
- protects from rain, snow, dust, UV
- Security
- central locking system
View on Amazon: Relaxcabine 26 Cu Ft Hard Shell Roof Cargo Box
This Relaxcabine cargo box offers 26 cubic feet of storage and a 150 lb load capacity. It features a dual-side opening design for easy access from either vehicle side. The hard shell is made from ABS+PC composite to resist weather and impact. It installs tool-free on most roof racks. This large carrier suits families needing extra space for camping gear or luggage.
Pros
- 26 cubic feet of extra-large storage capacity
- Dual-side opening for flexible loading access
- 150 lbs load capacity for heavy gear
- Tool-free installation on round, square, or aerodynamic bars
Cons
- Heavier at 52.7 lbs than many competitors
- Lower 150 lb weight limit compared to 165 lb options
- Larger dimensions may not fit smaller roof racks
Good fit if
- You need maximum storage volume for long trips
- You park close to curbs and need side access
- You carry bulky items like camping equipment
Skip if
- You require a higher 165 lb weight capacity
- You have a compact car with small roof bars
- You prefer a lighter unit for easier handling
Verdict: Relaxcabine 26 Cu Ft Dual-Side Rooftop Box is ideal for travelers prioritizing volume and side access over weight limits. It fits those with ample roof space who need to haul large loads.
PM Performotor 15 cu ft Dual-Side Box
Best for: Dual-side access and moderate load needs
- Capacity
- 15 cu ft
- Shell Type
- Hard shell, ABS plastic
- Opening
- Dual-side
- Load Capacity
- 110 lbs
- Water Resistance
- Weatherproof
- Security
- Key and lock
This PM Performotor hard shell cargo box offers 15 cubic feet of storage for your roof rack. It features dual-side opening for easy access and supports up to 110 pounds of evenly distributed load. The ABS plastic construction is weatherproof and includes a key lock for security. It fits vehicles with factory or aftermarket cross bars. You will appreciate the textured black finish and aerodynamic design.
Pros
- 15 cubic feet internal storage capacity
- Dual-side opening for flexible access
- 110 lb maximum load capacity
- Key and lock security system
- Tool-free installation on cross bars
Cons
- 110 lb capacity is lower than the 165 lb limit on other list items
- 15 cu ft size is smaller than the 19.4 cu ft reference product
- No mention of integrated LED lighting or smart connectivity features
Good fit if
- You need a compact 15 cubic feet storage solution
- You want dual-side opening for easier loading
- You drive an SUV or truck with cross bars
Skip if
- You require more than 15 cubic feet of space
- You need to carry loads over 110 pounds
- Your vehicle uses factory roof rails without cross bars
Verdict: PM Performotor 15 cu ft Dual-Side Hard Shell is a practical option for drivers who prioritize dual-side access and a moderate 110 lb load limit over maximum capacity. It fits well for weekend gear on vehicles with cross bars.
Specifications side by side
| Spec | Curtainboro 19.4 cu ft Dual-Side Opening Box | GarveeTech 12 cu ft Dual-Side Opening Roof Box | Goplus 14 cu ft Dual-Side Opening Roof Box | STMHOM 14 cu ft Hard Shell Roof Box | Maxsa Innovations 17 cu ft Hard Shell Cargo Box | Relaxcabine 26 Cu Ft Hard Shell Roof Cargo Box | PM Performotor 15 cu ft Dual-Side Box |
|---|---|---|---|---|---|---|---|
| Capacity | 19.4 cu ft (17 cu ft interior) | 12 cu ft (340 L) | 14 Cubic Feet | 14 cu ft | 17 cu ft | 26 Cu Ft | 15 cu ft |
| Shell Type | Hard shell, ABS | Hard shell ABS | ABS and PC | Hard shell ABS | Hard shell ABS | ABS+PC composite | Hard shell, ABS plastic |
| Opening | Dual-side | Dual-sided | Dual-side | Dual side | Dual-side | dual-side | Dual-side |
| Load Capacity | 165 lb | 165 lb | 165 lbs | 165 lb | 165 lbs | 150 lbs | 110 lbs |
| Water Resistance | Waterproof | Waterproof | Waterproof | not specified | Waterproof | protects from rain, snow, dust, UV | Weatherproof |
| Security | Locking system with 2 keys | 2 keys and 2 straps | double-lock design, super latch security | Lockable | not specified | central locking system | Key and lock |
| Installation | not specified | not specified | 4 quick connect anchors | not specified | not specified | tool-free | Tool-free or simple |
| Vehicle Compatibility | Cars and SUVs with compatible roof racks | All vehicles with roof rack | not specified | Square, round, and aerodynamic crossbars | Cars and SUVs with roof rack | round, square, and aerodynamic bars | Cross bars (roof rails) |
| Dimensions | 68.9 x 32.3 x 11.8 in | 54.3 x 31.5 x 13.4 in | 63 x 31 x 15 in | 62.2 x 31.5 x 13.4 in | 55.1 x 35 x 16.1 in | 87.2 x 38.2 x 17.4 in | 80 x 30 x 13 in |
| Recommended Use | Suitcases, camping equipment | not specified | not specified | not specified | Luggage, outdoor gear | not specified | Suitcases, camping gear, skis |
| Vehicle Type | Car, SUV | not specified | Car | Car, SUV | Car, SUV | not specified | Car |
| Size | 19.4 Cubic Feet | 12 Cubic Feet | not specified | 62.2"L x 31.5"W x 13.4"H | 17 Cubic Feet | 26 Cu Ft Extra Large Black | 15 Cubic Feet |
| Mount Type | Roof Mount | Roof Mount | Roof Mount | Roof Mount | Roof Mount | Roof Mount | Roof Mount |
| Lockable | Lockable | not specified | not specified | Lockable | not specified | Lockable | not specified |
| Weight | 39.7 pounds | 39 pounds | 25 pounds | 44.8 pounds | 35.3 pounds | 52.7 pounds | not specified |
| Color | Gray | Black | Black | Black | Black | Black | Textured Black |
| Model | bXU-t7-SK2vwzTXZsf0Z17f8ycdL6 | MP7b0YjWqgxAgOG-snFeyQS3GEfd | not specified | TSdU59fTC-O-lVQ0WzgfNAHdH | bIi-QJmJN9FwtqXvOPt-w-cKQbKMo | Cargo Box 26 Cu Ft Black | PM-71386 |
If you require lower cargo volume measurements, evaluate samsung smart 4 7 cu ft alternatives for matching dimensions.
Frequently asked questions
Which roof box has the largest capacity in this list?
The Relaxcabine 26 Cu Ft Hard Shell Roof Cargo Box offers the largest storage volume at 26 cubic feet. It measures 87.2 inches long and 38.2 inches wide. This model supports a 150 lb load capacity. It is ideal if you need maximum space for large gear or family trips.
Do all these alternatives feature dual-side opening access?
Most options provide dual-side opening, but the Maxsa Innovations 17 cu ft box does not. The Curtainboro, GarveeTech, Goplus, STMHOM, Relaxcabine, and PM Performotor models all include this feature. Dual-side access allows you to load items from either side of your vehicle for convenience.
What is the weight limit for these roof boxes?
Most models in this group support a 165 lb load capacity. The Relaxcabine 26 Cu Ft box has a 150 lb limit, and the PM Performotor 15 cu ft box supports 110 lb. Always check the specific load rating before packing to ensure safe travel on your roof rack.
Which option is the lightest to install?
The Goplus 14 cu ft Dual-Side Opening Roof Box is the lightest at 25 pounds. The Maxsa Innovations 17 cu ft box weighs 35.3 pounds. Lighter boxes can be easier to handle during installation, though you should still use proper lifting techniques and secure mounting hardware.
Can I use these boxes on an SUV?
Yes, several models are suitable for SUVs. The STMHOM 14 cu ft box explicitly lists SUVs as a compatible vehicle type. The Curtainboro and other hard shell boxes generally mount to roof racks found on cars and SUVs. Ensure your roof rack crossbars are within the recommended width limits.
Which box is best for aerodynamic efficiency?
The Maxsa Innovations 17 cu ft Hard Shell Cargo Box is described as aerodynamic. Its design helps reduce wind noise and drag compared to bulkier shapes. The Goplus 14 cu ft model also offers a streamlined profile with a height of 15 inches, balancing volume with road efficiency.
Are any of these boxes lockable for security?
The STMHOM 14 cu ft and Relaxcabine 26 Cu Ft boxes are explicitly listed as lockable. The Curtainboro 19.4 cu ft box also includes locking mechanisms for security. Lockable designs help protect your cargo from theft while you are away from your vehicle during trips or stops.