As an Amazon Associate we earn from qualifying purchases. Affiliate disclosure

Weather Guard 121-6-04 Aluminum Saddle Box or Weather Guard 72-Inch Standard Saddle Box? Which Weather Guard Model to Buy

Latest update:

As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.

You are deciding between the weather guard model 121 6 04 saddle box vs model 127 6 04 saddle box. Both units offer 11.0 cubic feet of storage and feature the 1KEY ULTRALOCK system for simplified security. They share identical external dimensions of 72 inches in length and 20 inches in width. The primary difference lies in their design profile. One is a low profile model, while the other is a standard profile. This distinction affects how they sit relative to your truck bed rails.

Key differences

AspectWeather Guard 121-6-04 Aluminum Saddle BoxWeather Guard 72-Inch Standard Saddle Box
ProfileLow ProfileStandard
Model Number121-6-0472-Inch Standard (listed as 783965071246)
Weight76.5 poundsnot listed

Which one should you choose?

Choose Weather Guard 121-6-04 Aluminum Saddle Box if

  • You want a lower profile that sits closer to the truck bed rails.
  • You prefer a specified weight for easier handling during installation.

Choose Weather Guard 72-Inch Standard Saddle Box if

  • You prefer a standard profile design for traditional styling.
  • You are looking for the standard full-size option in this series.

Verdict: The 121-6-04 suits you if you prioritize a low profile and known weight. The standard model fits if you prefer a traditional height. Both provide the same storage volume and security features.

Profile and Weight Differences

Profile Style

Edge: Tie

The Weather Guard 121-6-04 is explicitly described as a Full Low Profile model. This designation suggests a design intended to sit closer to the truck bed rails, which can improve aerodynamics and reduce wind noise at highway speeds. The Weather Guard 72-Inch Standard Saddle Box (Model 127-6-04) is labeled as a Full Standard model. Standard profiles typically offer a taller vertical profile, which may provide slightly more clearance over the bed rails but can increase the overall height of the storage setup. If you prioritize a sleeker look and potentially better fuel efficiency, the low profile option is the distinct choice. However, if you need maximum vertical clearance for larger items, the standard profile may be more practical. Both models maintain the same length and width, so the footprint on your truck bed remains identical.

Construction Material

Edge: Tie

Both saddle boxes are constructed from aluminum. This shared material choice means you are getting corrosion resistance and a lightweight structure in either case. Aluminum is a durable choice for truck accessories because it does not rust like steel, making it suitable for outdoor storage in various weather conditions. The data confirms that both the 121-6-04 and the 127-6-04 utilize this same aluminum build. This ensures that the fundamental durability and maintenance requirements are comparable. You will not find a significant difference in longevity or resistance to the elements based solely on the primary material. The finish options, such as Gunmetal Gray, are available for both, allowing you to match your truck's aesthetic without compromising on the core material properties. The choice between them does not hinge on material quality, as both offer the same aluminum construction.

External Dimensions

Edge: Tie

The external dimensions for both models are identical. Each box measures 72 inches in length, 20 inches in width, and 18 inches in height. This consistency means that the physical space they occupy on your truck bed is exactly the same. You do not need to adjust your truck bed layout or worry about fitment differences regarding length or width. The 18-inch height is consistent across both the low profile and standard profile designations, which might seem counterintuitive but suggests the difference lies in the shape or contour of the lid rather than the overall height. This uniformity simplifies the decision-making process if you have specific space constraints, as either box will fit the same way. The internal volume is also listed as 11.0 cubic feet for both, confirming that the usable storage space is equivalent.

Weight Specification

Edge: Weather Guard 121-6-04 Aluminum Saddle Box

The Weather Guard 121-6-04 has a listed weight of 76.5 pounds. This specific weight data point is provided for the low profile model. The Weather Guard 127-6-04 does not have a specific weight listed in the provided data. In many cases, a low profile design might be slightly lighter or heavier depending on the structural reinforcement needed, but without explicit data, we cannot confirm a weight difference. If weight is a critical factor for your installation or for reducing the load on your truck bed, the 121-6-04 offers a known value. For the 127-6-04, you would need to consult the manufacturer directly for its exact weight. Until then, the 121-6-04 provides transparency regarding its mass, which can be helpful for calculating total cargo capacity or handling during installation.

Locking System

Edge: Tie

Both models feature the 1KEY ULTRALOCK system from Weather Guard. This security feature is highlighted as a key benefit for both products, offering superior break-in protection. The system is designed for simplicity, allowing one key to work across all your Weather Guard boxes. This means if you already own other Weather Guard products with this lock, you can use the same key for these saddle boxes as well. There is no difference in the locking mechanism between the 121-6-04 and the 127-6-04. Both provide the same level of security and convenience. This shared feature ensures that your storage remains secure regardless of which profile you choose. The one-key simplicity is a significant practical advantage for fleet owners or individuals with multiple storage units, streamlining your key management.

Which Weather Guard Saddle Box Fits You

Drivers seeking aerodynamic efficiency and lower profile

Our pick: Weather Guard 121-6-04 Aluminum Saddle Box

The Weather Guard 121-6-04 is a Full Low Profile model. Its 18-inch height and 20-inch width sit closer to the bed rails. This design reduces wind resistance and noise at highway speeds. You get the same 11.0 cubic feet of storage and the 1KEY ULTRALOCK system, but with a sleeker silhouette that integrates better with your truck bed.

Buyers prioritizing standard height utility and capacity

Our pick: Weather Guard 72-Inch Standard Saddle Box

The Weather Guard 127-6-04 offers a Full Standard profile. It maintains the same 72-inch length and 20-inch width, providing 11.0 cubic feet of space. The 18-inch height allows for easier access to taller items without bending as low. You still receive the secure 1KEY ULTRALOCK system and durable aluminum construction for reliable daily storage.

Users who prefer a compact, low-slung look

Our pick: Weather Guard 121-6-04 Aluminum Saddle Box

If you want a saddle box that blends seamlessly with your truck bed, the 121-6-04 is the better choice. Its low profile design minimizes visual bulk. You retain the full 11.0 cubic feet of capacity and the weight of 76.5 pounds. The GunMetal Gray finish and aluminum material ensure durability while keeping the profile low and streamlined.

The products compared

Weather Guard 121-6-04 Aluminum Saddle Box

Best for: Low-profile truck bed storage needs

Material
Aluminum
Profile
Low Profile
Dimensions
72 × 20 × 18 inches
Weight
76.5 pounds

View on Amazon: Weather Guard 121-6-04 Aluminum Saddle Box Affiliate link

This Weather Guard saddle box is a low-profile aluminum storage solution measuring 72 inches long, 20 inches wide, and 18 inches high. It holds 11.0 cubic feet of gear and weighs 76.5 pounds. The unit features a gunmetal gray finish and includes the 1KEY ULTRALOCK system for simplified security across your fleet. It is designed for trucks needing streamlined, durable storage without excessive height.

Pros

  • Low 18-inch height maintains a sleek profile
  • Durable aluminum construction resists corrosion
  • 11.0 cubic feet of storage capacity
  • 1KEY ULTRALOCK system works with all Weather Guard boxes

Cons

  • Lower 18-inch height limits vertical storage for tall items
  • 76.5-pound weight requires careful handling during installation
  • 72-inch length may not fit all truck beds

Good fit if

  • You need a low-profile box to avoid interfering with a tonneau cover
  • You want a single key to operate all your Weather Guard locks
  • You have a standard truck bed that accommodates a 72-inch length

Skip if

  • You require maximum vertical storage height for bulky equipment
  • You prefer a heavier, more robust steel construction over aluminum
  • You have a short bed that cannot accommodate a 72-inch box

Verdict: Weather Guard Low Profile Aluminum Saddle Box offers a streamlined storage solution for trucks where height clearance is critical. It suits owners who prioritize a low visual profile and unified locking security over maximum vertical capacity.

Weather Guard 72-Inch Standard Saddle Box

Best for: Standard height trucks needing high capacity

Material
Aluminum
Capacity
11.0 cu ft
Lock Type
1KEY ULTRALOCK
Finish
Gunmetal Gray
Dimensions
72 × 20 × 18 inches
Weight
75 pounds

View on Amazon: Weather Guard 72-Inch Standard Saddle Box Affiliate link

This Weather Guard Model 127-6-04 is a full standard height aluminum saddle box measuring 72 by 20 by 18 inches. It offers 11.0 cubic feet of storage. The box features the 1KEY ULTRALOCK system for simplified key management across your gear. It is designed for heavy-duty use and fits trucks needing standard height clearance and robust security.

Pros

  • 11.0 cubic feet of interior volume
  • Full standard 18-inch height profile
  • 72-inch length for large items
  • 1KEY ULTRALOCK system for single-key access

Cons

  • Standard height requires adequate truck bed clearance
  • 72-inch length may not fit smaller truck beds
  • Gunmetal Gray finish may not match all truck colors

Good fit if

  • You need maximum storage capacity for gear
  • You have a truck bed with standard height clearance
  • You want simplified key management with the 1KEY system

Skip if

  • You have a low-profile truck bed or limited height clearance
  • You need a shorter box for a smaller truck bed
  • You prefer a gloss black or textured matte black finish

Verdict: Weather Guard 72 in Standard Aluminum Saddle Box is ideal for users who prioritize high-volume storage and robust security in a standard height profile. It suits trucks with ample vertical clearance and those needing to transport larger items securely.

Specifications side by side

Spec Weather Guard 121-6-04 Aluminum Saddle Box Weather Guard 72-Inch Standard Saddle Box
Material not stated Aluminum
Capacity not stated 11.0 cu ft
Lock Type not stated 1KEY ULTRALOCK
Finish not stated Gunmetal Gray
Profile Low Profile not stated
Dimensions 72 × 20 × 18 inches 72 × 20 × 18 inches
Weight 76.5 pounds 75 pounds
Color GunMetalGray GunMetalGray
Model 121-6-04 783965071246
Size not stated 72 inches x 20 inches x 18 inches

Frequently asked questions

Does the Weather Guard 121-6-04 have a low profile design?

Yes, this model is explicitly categorized as a low profile unit. It measures 18 inches in height and 20 inches in width. This compact footprint allows it to sit closer to the truck bed rails. The design helps reduce wind resistance and visual height for a streamlined look.

What is the weight of the Weather Guard 121-6-04?

The Weather Guard 121-6-04 weighs 76.5 pounds. This weight is associated with its aluminum construction. Aluminum provides a balance of durability and manageable mass. You can expect a sturdy box that is not excessively heavy for installation and removal.

Are both saddle boxes made of aluminum?

Yes, both the 121-6-04 and the standard 72-inch model are constructed from aluminum. Aluminum is chosen for its resistance to corrosion and its lightweight nature compared to steel. This material ensures long-term durability against road debris and weather exposure.

Do the two models have the same external dimensions?

Yes, both units share identical external dimensions. They are 72 inches long, 20 inches wide, and 18 inches high. The primary difference lies in the profile classification. One is marketed as low profile while the other is standard, though their physical measurements remain the same.

What color is the Weather Guard 121-6-04?

The Weather Guard 121-6-04 comes in GunMetal Gray. This neutral finish is designed to blend with various truck styles. It offers a professional appearance that matches many other truck accessories. The color is consistent with the standard model listed.

Which model is best for trucks with height clearance issues?

The Weather Guard 121-6-04 is better for trucks where height clearance is critical. It is described as a low profile solution. Its 18-inch height sits closer to the bed rails. This design minimizes vertical protrusion, which is useful for garages or low-clearance areas.

Is the 72-inch standard box suitable for larger items?

Yes, the standard model is ideal for users needing high-volume storage. It offers robust security and ample space for larger items. The standard height profile provides vertical capacity that low profile designs might restrict. It suits trucks with ample clearance above the bed rails.

What is the model number for the low profile aluminum box?

The model number for the low profile aluminum box is 121-6-04. This specific identifier helps you locate the correct part for your vehicle. It distinguishes the low profile variant from the standard 72-inch model. Use this number when ordering or checking compatibility.

See also