OMAC 11.3 CuFt Hard-Shell Roof vs OMAC 11.3 Cu Ft Dual-Side (2026): Key Differences
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
You are comparing the omac 11 3 cuft hard shell roof vs 11 3 cu ft dual side. Both models share identical dimensions, capacity, and weight. They both offer waterproof protection and pre-assembled installation. The primary difference lies in how the listing describes the shell construction. One emphasizes a hard-shell exterior, while the other specifies the material as PS UV Protected. Both provide dual-side opening access for convenience.
Key differences
| Aspect | OMAC 11.3 CuFt Hard-Shell Roof Box | OMAC 11.3 Cu Ft Dual-Side Roof Box |
|---|---|---|
| Shell Type | Hard-Shell | PS UV Protected |
| Capacity | 11.3 Cubic Feet | 11.3 cu ft |
| Dimensions | 52 x 32 x 12 inches | 52 x 32 x 12 in |
| Weight | 35.2 pounds | 35.8 pounds |
Which one should you choose?
Choose OMAC 11.3 CuFt Hard-Shell Roof Box if
- You prefer a product description that highlights a hard-shell design for perceived durability.
- You want the lighter listed weight of 35.2 pounds for easier handling during installation.
Choose OMAC 11.3 Cu Ft Dual-Side Roof Box if
- You want to verify the specific material composition is PS UV Protected plastic.
- You are looking for the model number AMZUS96ART320 to ensure exact part matching.
Verdict: The choice depends on whether you prioritize the marketing emphasis on a hard-shell build or the specific material specification. Both units provide the same 11.3 cubic feet of storage and dual-side access. Select the version that aligns with your preferred material description and model identification.
Specs and Features Compared
Shell Type
Product A lists its shell type as Hard-Shell, emphasizing the rigid structure. Product B describes its shell as PS UV Protected material. Both products use the same durable PS material with UV protection to guard against sun damage. The distinction is mostly in labeling. Product A highlights the hard-shell construction for general buyers. Product B focuses on the material protection. In practice, both offer the same rigid, weather-resistant housing. The difference is semantic rather than functional. You get the same sturdy enclosure regardless of the specific label used in the description.
Opening Mechanism
Product A features Dual-Side Opening, allowing you to access cargo from either side of the vehicle. Product B also offers dual-side access. This feature is consistent across both models. You can load items from the driver or passenger side without moving the car. This is particularly useful in tight parking spots. Both listings confirm this convenience. The mechanism is identical, providing equal ease of use. You do not gain an advantage in accessibility by choosing one over the other. The dual-side design is a standard feature for both units.
Capacity and Size
Both boxes provide 11.3 Cubic Feet of storage space, which equals 320 Liters. The dimensions are identical at 52 x 32 x 12 inches. You get the same volume for your gear in either model. The external footprint is the same, fitting similarly on roof racks. There is no difference in internal volume or external size. You can carry the same amount of luggage in either box. The capacity is sufficient for most travel needs. The size consistency ensures that installation and fitment are interchangeable for both options.
Weight
Product A weighs 35.2 pounds in the features list, while the specs show 35.8 pounds. Product B also lists 35.2 pounds in features and 35.8 pounds in specs. The weight is consistent across both models. This weight is manageable for most roof rack setups. You do not need to worry about exceeding weight limits due to the box itself. The slight discrepancy in the feature text versus specs is minor. Both units impose the same load on your vehicle. The weight does not differentiate the two products.
Water Resistance
Both products are described as Waterproof. This means they are designed to keep your belongings dry in rain and snow. The seals and construction are intended to prevent water ingress. You can trust either box to protect your gear from the elements. There is no difference in water resistance claims. Both listings emphasize this protection equally. You do not need to choose one for better weather performance. Both provide the same level of waterproofing for your travel needs.
Which OMAC roof box fits you
You want the clearest product label
This listing explicitly identifies the shell type as Hard-Shell in its key specs. If you prefer straightforward terminology that describes the rigid structure of the carrier, this option is the better choice. The data highlights this specific construction term, which may help you quickly confirm the durability and form factor you are looking for in a rooftop cargo box.
You prefer detailed material specifications
This model lists the shell type as PS UV Protected material. If you want to know the exact polymer composition and its protective qualities right in the spec sheet, this listing provides that detail. It emphasizes the material science behind the box, ensuring you understand the UV protection and durability provided by the durable PS construction without relying on broader category labels.
You need dual-side access and waterproofing
Both boxes offer dual-side opening and waterproof protection, but this listing clearly states these features in its key specs. You get a 11.3 cubic foot capacity, pre-assembled installation, and dimensions of 52 x 32 x 12 inches. The matt black finish and compatibility with all vehicles make it a practical choice for anyone needing versatile access and weather-resistant storage on their roof rack.
The products compared
OMAC 11.3 CuFt Hard-Shell Roof Box
Best for: curb-side access and quick setup
- Capacity
- 11.3 Cubic Feet
- Shell Type
- Hard-Shell
- Opening
- Dual-Side Opening
- Water Resistance
- Waterproof
- Installation
- Pre-Assembled
- Vehicle Compatibility
- Compatible with all vehicles
View on Amazon: OMAC 11.3 CuFt Hard-Shell Roof Box Affiliate link
This OMAC roof box offers 11.3 cubic feet of storage in a hard-shell design. It features dual-side opening for access from either side of your vehicle. The unit measures 52 by 32 by 12 inches and weighs 35.8 pounds. It is pre-assembled and waterproof. This model suits drivers who need convenient access to gear without removing the box.
Pros
- Dual-side opening for easy access
- Pre-assembled for quick installation
- Waterproof construction protects contents
- 11.3 cubic feet capacity
Cons
- Heavier at 35.8 pounds than some competitors
- Standard PS material lacks carbon fiber texture
- No mention of integrated locking mechanism
Good fit if
- You want to load items from the curb side
- You need a pre-assembled unit to save time
- You require waterproof protection for your cargo
Skip if
- You prefer a lighter carrier under 30 pounds
- You want a carbon fiber textured finish
- You need a taller box for bulkier items
Verdict: OMAC 11.3 CuFt Dual-Side Roof Box provides convenient dual-side access and waterproof protection in a pre-assembled package. It fits drivers who prioritize easy loading from the curb side over a premium textured finish.
OMAC 11.3 Cu Ft Dual-Side Roof Box
Best for: Easy side access and quick setup
- Capacity
- 11.3 cu ft
- Shell Type
- PS UV Protected
- Opening
- dual-side
- Water Resistance
- waterproof
- Installation
- pre-assembled
- Vehicle Compatibility
- all vehicles
View on Amazon: OMAC 11.3 Cu Ft Dual-Side Roof Box Affiliate link
This OMAC cargo box offers 11.3 cubic feet of storage in a 52 by 32 by 12 inch shell. It weighs 35.8 pounds and features a dual-side opening mechanism. The PS UV protected material provides waterproof protection for your gear. It arrives pre-assembled for quick installation on any roof rack. This design suits travelers who need flexible access to their cargo without removing it from the vehicle.
Pros
- Dual-side opening for convenient access
- Pre-assembled for easy installation
- Waterproof PS UV protected shell
- 11.3 cubic feet capacity
Cons
- Heavier than the hard-shell variant
- Dual-side mechanism adds complexity
- Standard PS material lacks premium texture
Good fit if
- You need easy access from both sides
- You want a pre-assembled unit
- You prefer waterproof storage
Skip if
- You prioritize minimal weight
- You want a simpler single-opening design
- You prefer a textured carbon fiber look
Verdict: OMAC 11.3 CuFt Dual-Side Roof Box is a practical choice for drivers who value side access and quick setup over lightweight simplicity.
Specifications side by side
| Spec | OMAC 11.3 CuFt Hard-Shell Roof Box | OMAC 11.3 Cu Ft Dual-Side Roof Box |
|---|---|---|
| Capacity | 11.3 Cubic Feet | 11.3 cu ft |
| Shell Type | Hard-Shell | PS UV Protected |
| Opening | Dual-Side Opening | dual-side |
| Water Resistance | Waterproof | waterproof |
| Installation | Pre-Assembled | pre-assembled |
| Vehicle Compatibility | Compatible with all vehicles | all vehicles |
| Dimensions | 52 x 32 x 12 inches | 52 x 32 x 12 in |
| Vehicle Type | Car | Car |
| Mount Type | Roof Mount | Roof Mount |
| Weight | 35.8 pounds | 35.8 pounds |
| Size | 320 L | 320 L |
| Color | black | Black |
| Model | 96ART320 | AMZUS96ART320 |
Frequently asked questions
Are the OMAC 11.3 CuFt Hard-Shell and Dual-Side roof boxes the same size?
Yes, both models share identical external dimensions. They measure 52 inches in length, 32 inches in width, and 12 inches in height. Each unit offers a total capacity of 320 liters, which converts to 11.3 cubic feet. You will not need to adjust your roof rack spacing or aerodynamic expectations when choosing between the two options.
Do both roof boxes weigh the same amount?
Yes, both units weigh exactly 35.8 pounds. This consistent weight ensures that your vehicle's roof load limit remains unchanged regardless of which model you select. The identical mass suggests they use similar material thicknesses and structural designs, providing comparable stability while driving on the highway.
What is the main difference between the Hard-Shell and Dual-Side models?
The primary difference lies in the marketing description of the shell type. One listing explicitly labels the product as Hard-Shell, emphasizing its rigid structure. The other describes the material as PS UV Protected. Both use durable polystyrene with UV protection, but the labeling highlights different aspects of the build quality.
Which model is better for curb-side access?
The Dual-Side model is best for curb-side access and quick setup. Its design allows you to load items from the side of the vehicle, which is convenient when parked close to curbs or in tight spaces. The Hard-Shell model focuses on rigid structure but does not emphasize this specific access convenience in its key attributes.
Are these roof boxes pre-assembled?
Yes, both the Hard-Shell and Dual-Side models come in a pre-assembled package. You do not need to spend time putting together the shell or attaching the mounting hardware before installation. This saves you effort and ensures the unit is ready to mount on your roof racks immediately after unboxing.
Do these boxes fit standard roof racks?
Both models are designed for roof mount installation on cars. Their standard dimensions of 52 by 32 inches fit most common crossbar setups found on passenger vehicles. You should verify that your existing roof rack bars can support the 35.8-pound weight of the box before purchasing.
Is the color option different between the two models?
Both models are available in black. The specifications list the color as black for the Hard-Shell version and Black for the Dual-Side version. There is no difference in the available color palette, so your choice will not be limited by aesthetic preferences regarding the exterior finish.