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Rhino-Rack MasterFit Rooftop Cargo Box - 15-1/2 cu ft - Textured Black
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Rhino-Rack MasterFit Rooftop Cargo Box - 15-1/2 cu ft - Textured Black

Item # RRRMFT440
Our Price: $549.00
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Roof Box
This item qualifies for Free Truck Freight Shipping
Shipping Weight: 51 lbs
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75 x 32 x 16. Roof box mounts to your crossbars with MasterFit clamps. Locking lid opens from either side of your vehicle. Great for carrying skis, snowboards, and other gear on crossovers or mid-size wagons. Durable ABS plastic construction. Lowest Prices for the best roof box from Rhino Rack. Rhino-Rack MasterFit Rooftop Cargo Box - 15-1/2 cu ft - Textured Black part number RRRMFT440 can be ordered online at or call 1-636-306-4830 for expert service.
  • All Info
  • Reviews (23)
  • Q & A (0)
  • Photos
  • Why etrailer?

Rhino Rack Roof Box - RRRMFT440

  • Aero Bars
  • Factory Bars
  • Square Bars
  • Round Bars
  • Elliptical Bars
  • Medium Capacity
  • Rhino Rack
  • Medium Length
  • Black
  • Dual Side Access
  • Medium Profile

75 x 32 x 16. Roof box mounts to your crossbars with MasterFit clamps. Locking lid opens from either side of your vehicle. Great for carrying skis, snowboards, and other gear on crossovers or mid-size wagons. Durable ABS plastic construction.


  • Cargo box mounts on your vehicle's roof rack to provide enclosed storage for your gear
    • Perfect for carrying sports equipment and large luggage for up to 3 people
    • Great for crossovers or mid-size wagons
  • Dual-side-opening lid lets you load and unload gear from either side of your vehicle
  • 2 Locks ensure your cargo is secure
    • Key can only be removed when box is closed and locked
  • MasterFit clamps offer quick, simple installation
    • Slide the clamps into place over your bars
    • Tighten the knobs inside the box
    • Press down on the buttons to lock clamps in place
  • Aerodynamic shape helps reduce wind drag
  • Rear spoiler plate deflects dirt and road debris
  • 6 Internal anchor points and 2 included straps let you tie down gear inside the box
  • Durable yet lightweight ABS plastic construction resists impacts and UV rays
  • Textured black color


  • Application: round, square, aero, elliptical, and most factory crossbars
    • Crossbar spread: 24-3/8" - 36-5/8"
    • Requires adapter kit (RUBK-MF - sold separately) to fit Rhino-Rack Heavy-Duty crossbars
  • Carrying capacity: 15.5 cu ft
  • Maximum Ski/Snowboard Length: 187 cm
  • Weight capacity: 165 lbs
  • Exterior dimensions: 75" long x 32" wide x 16" tall
  • Strap dimensions: 78" long x 1" wide
  • Box weight: 56 lbs
  • 5-Year limited warranty

masterfit cargo box diagram

Cargo boxes, bags, and baskets are great for transporting gear on your vehicle's roof. A cargo box has the added benefits of an aerodynamic shape that reduces drag and wind noise, a hard shell to protect your gear, and a higher degree of weather resistance. And you can latch and lock a cargo box for added protection against theft.

Aerodynamic Cargo Box with Textured Finish

masterfit cargo box

The MasterFit has 15.5 cu ft of space for sports equipment, camping gear, or large luggage for up to 3 people. The aerodynamic, low-profile design helps reduce wind noise and drag. The locking lid opens from both sides, and it's designed to provide clearance when you open your rear hatch. Sliding clamps accommodate most crossbar styles and spreads so you can install the box in minutes without tools. And the durable yet lightweight ABS plastic construction helps to prevent warping, denting, or cracking.

Sturdy, Dual-Side-Opening Lid

masterfit cargo box opening

The MasterFit lid opens from both sides for easy access to your cargo. This ensures your gear is always close at hand whether you mount the box in the center of your roof or closer to the driver's or passenger's side.

Built-In Security

Rhino Rack Master Fit Lock

There is a lock on each side of the box. These locks prevent you from removing the keys if the box is not properly closed and locked. This eliminates the possibility of the box opening as you travel down the road. And because the buttons that lock the clamps to your crossbars are inside the box, locking the mounted box prevents would-be thieves from removing the box from your roof.

MasterFit Mounting System

Rhino Rack Clamp

The MasterFit installs with easy-to-use clamps. These clamps fit most crossbar styles, and they slide along tracks in the floor of the box to accommodate different crossbar spreads. Large, easy-to-grab knobs with built-in locking buttons make adjustment simple. Press the red button to open the clamp, slide it into place over your crossbar, then turn the knob to secure it in place. The knob clicks when it's tight so you won't overtighten and damage your crossbars. Press the red button again to secure the clamp in place.

Cargo Tie-Down Anchors

Rhino Rack Luggage Strap

It includes 2 tie-down straps to secure your gear to 6 internal anchor points. These nylon straps have cam buckles so you can tighten them down to secure your luggage. Metal rails on the bottom of the box reinforce both the internal anchor points and the mounting clamp tracks.

RMFT440 Rhino Rack MasterFit Roof Top Cargo Carrier - 15-1/2 cu ft - Textured Black

Installation Details RRRMFT440 Installation instructions

Customer Satisfaction Score:

Customer Reviews

Rhino-Rack MasterFit Rooftop Cargo Box - 15-1/2 cu ft - Textured Black - RRRMFT440

Average Customer Rating:  4.7 out of 5 stars   (23 Customer Reviews)

75 x 32 x 16. Roof box mounts to your crossbars with MasterFit clamps. Locking lid opens from either side of your vehicle. Great for carrying skis, snowboards, and other gear on crossovers or mid-size wagons. Durable ABS plastic construction.


Looks great, works perfectly. Always good service and prices from etrailer! Been a customer for over 20 years.


Fits Lexus GX 460 very well to accommodate all our adventures and gear overflow.


I received this cargo box yesterday and it will easily store 2 large suitcases, a bag of dog food and other items for our long trips. The attachment clamps makes it easy to install and remove from the cross bars on the car.


Easy on and off. Locks easily. Key remains in key hole when unlocked. Looks great and not too big so it's easy to handle.


Love the roof top box. Ordered from e trailer many times in the past abs they have the best selection and shipping times. Highly recommend the roof box and etrailer.


This has worked great on our 2019 RAV4. It holds a lot, been water-tight through all kinds of weather. The two-sided opening is extremely convenient when dealing with getting odd-shaped items in and out. The only down side is the hit on our gas mileage, but that's to be expected with anything you add to the roof. We definitely recommend!


As I needed something quickly and there are all sorts of supply chain issues with manufacturers, Teresa, the sales person at etrailer, did an excellent job on the phone helping me go through the inventory to find something that was both the right fit and would be available relatively soon. I very much appreciated having a capable person (as opposed to useless bots) to communicate with over the phone. It arrived in good condition and especially considering that it's the lower-priced spread (as opposed to Thule) it fits properly and is easy for one person to maneuver. I've bought a number of items from etrailer over the years and appreciate the high level of service.


This thing is great. Can carry a ton of gear. Easy to access either side. Easy to take on and off. Definitely recommend.


Shipping was faster than anticipated. Product is excellent so far and glad I went with it over higher prices brands. Good customer support. Will shop here again.


Great box! Easy to install by yourself and very quite even at highway speeds.


OUTSTANDING...WE love our Rhino Rack!
James - 07/24/2022


I see that you said that the products you got for your Twenty Sixteen Toyota Prius, based on the review information, didnt work out. I was wondering if you had any more details as to what was giving you trouble.
-- Etrailer Expert Brooke M - 10/12/2022












Review from a similar MasterFit in Roof Box

Great stuff, great customer service!


See what our Experts say about this Rhino Rack Roof Box

  • Does Rhino-Rack MasterFit Rooftop Cargo Box # RRRMFT440 Fit 2022 Hyundai Palisade Factory Crossbars
    Yes the Rhino-Rack MasterFit Rooftop Cargo Box # RRRMFT440 that you referenced is a confirmed fit for the factory crossbars of your 2022 Hyundai Palisade.
    view full answer...
  • Determining Best Rooftop Cargo Carrier To Carry Golf Clubs On 2020 Mazda CX-5
    I would be happy to help you find the best Rooftop Cargo Carrier for your 2020 Mazda CX-5. To make sure that the cargo carrier you choose will not contact the rear hatch when you open it you will want to make sure that if your crossbars are adjustable to move the front cross bar as far forward as possible and then measure from the center of the front crossbar to the seam of the top of the rear hatch and roof as shown in the included diagram. You will also want to measure your factory crossbars...
    view full answer...
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  • Do Locks On Both Sides of Rhino-Rack MasterFit Cargo Box Need to be Unlocked to Gain Access
    The Rhino-Rack MasterFit Rooftop Cargo Box # RRRMFT440 referenced in your question does feature a lock on each side of the box but you only need to unlock the core on the side you are opening. The dual side opening lid allows you to load or unload your cargo from either side of the vehicle and 2 keys are included. I have attached the written instructions manual that you can take a look at as well.
    view full answer...
  • How Far Is The Rear Mounting Location To the Edge of The Rhino-Rack MasterFit Cargo Box?
    I spoke with Rhino Rack, and they informed me that the distance from the rear mounting clamp on the Rhino-Rack MasterFit Rooftop Cargo Box # RRRMFT440 to the rear of the cargo box is 15-3/4" . Attached is a diagram showing this measurement for you to check out, as well as a product review video.
    view full answer...
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  • Will the Rhino-Rack MasterFit Rooftop Cargo Box Fit on Thule WingBar Evo Crossbars?
    Yes, the Rhino-Rack MasterFit Rooftop Cargo Box - 15-1/2 cu ft - Textured Black # RRRMFT440 will fit on Thule WingBar Evo Crossbars # TH711420. If you need a complete roof rack system, feel free to reach out to me with the year/make/model of your vehicle, and I will be happy to make you a recommendation.
    view full answer...
  • Which Rooftop Cargo Box Can I Use on a 2021 Mazda 3 with Factory Crossbars
    I recommend using the Rhino-Rack MasterFit Rooftop Cargo Box - 15-1/2 cu ft - Textured Black # RRRMFT440 which can hold skis up to 187cm long and will fit on the factory crossbars of your 2021 Mazda 3 Hatchback. This RhinoRack box lets you access the inside of the box from either the driver or passenger side and the box comes with 2 locks to keep the contents secured. You will want to make sure that you've got 49-1/4" from the center of the front crossbar to the line where the roof meets...
    view full answer...
  • Recommended Roof Rack For 2011 Ford Edge w/ Raised Side Rails to Carry Rhino-Rack Cargo Box
    Yes, your 2011 Ford Edge is absolutely able to carry the Rhino-Rack MasterFit Rooftop Cargo Box # RRRMFT440. This is a really smart choice for a cargo box because like most Rhino-Rack items, it is a very good value, offering quality at a better price than similar brands. To mount it on your '11 Edge you will need a roof rack, and since you mentioned crossbars I assume you already have raised side rails. So the rack I recommend is from Malone: - Malone AirFlow2 Roof Rack # MPG216 I like...
    view full answer...
  • Will the Rhino-Rack MasterFit Rooftop Cargo Box Work with Malone AirFlow2 Roof Racks
    Yes, the clamps on the Rhino-Rack MasterFit Rooftop Cargo Box # RRRMFT440 will work with Malone AirFlow2 Roof Racks like # MPG216. The Malone AirFlow2 Roof Racks # MPG216 has crossbars that are 3" wide x 1" tall and the Rhino-Rack MasterFit Rooftop Cargo Box # RRRMFT440 works with crossbars that are between 1-1/8" - 3-9/16" wide x 11/16" - 1-3/8" tall.
    view full answer...
  • Recommended Cargo Box for Integrated Roof Rails on a Subaru Outback
    I measured a set of integrated crossbars on a Subaru Outback and found that they are 30-1/2" apart. I have a solution for you but the Thule Sidekick Roof Mounted Cargo Carrier Box item # TH78GC requires crossbar spreads from a minimum of 23-5/8" - to a maximum of 28". Instead I recommend the Rhino-Rack MasterFit item # RRRMFT440. This cargo box fits a crossbar spread of 24-3/8" - 36-5/8". It also includes locks to secure your gear in the box, offers 15.5 cu ft of carrying capacity,...
    view full answer...
  • Comparing Yakima Sky Box 16 and Rhino-Rack MasterFit Cargo Boxes For 2017 Subaru Crosstrek
    Between the Yakima Skybox 16 # Y07335 and Rhino-Rack MasterFit # RRRMFT440 I recommend the Yakima SkyBox. This is due to it having a slightly larger storage size of 16 cubic feet compared to the 15-1/2 cubic feet of the Rhino-Rack box, but also the SkyBox will mount further forward on your vehicle giving you an additional 4-1/4" of rear hatch clearance making this rack more likely to allow you to be able to open your hatch. In addition to this I went out and measured the flat surfaces...
    view full answer...
  • How to Carry Skis and Snowboards on a 2011 Honda CR-V
    We have some excellent options for your 2011 Honda CR-V that will allow you to carry both skis and snowboards. The majority of these options are first going to require that you have a roof rack installed. For a roof rack, I recommend like the Rhino-Rack RVP Roof Rack part # RRRVP15 because it has a sleek look and installs using fixed mounting points so you don't have to worry about door clips. It also has aero shaped cross bars which are less noisy. Then in order to attach your skis...
    view full answer...
  • Does Rhino Rack MasterFit Cargo Box Fit on Rhino Rack Aero Bar Rack for Camper Shells
    The Rhino Rack MasterFit Rooftop Cargo Box # RRRMFT440 that you referenced does fit on the Rhino Rack aero bars of the Rhino-Rack Aero Bar Roof Rack for Camper Shells # Y02-490B that you referenced. The bar height dimension of 1-1/2 inch isn't correct as the bars are actually 1-3/16 inch.
    view full answer...
  • Cargo Box to Work with Accessory Bars on Rhino-Rack 60" x 49" Pioneer Platform
    I do have a good option for you, however your existing Yakima SkyBox 16 # Y07335 won't be able to mount to the 48" Accessory Bars # RR43137B on the Rhino-Rack Pioneer Platform. This is because the mounting clamps on the Yakima Box, which are spaced apart by 21 inches (side to side), won't line up to gaps in the Pioneer Platform. This means they won't be able to access the underside of the Accessory Bars for proper attachment. The Accessory Bars are primarily designed to work with accessories...
    view full answer...
  • Comparing Rhino-Rack MasterFit Rooftop Cargo Box 15.5 Cu Ft to Yakima and Thule
    The Rhino-Rack MasterFit Rooftop Cargo Box part # RRRMFT440 is an excellent option with top of the line features like dual sided opening, locks for security, master fit clamps for a fast/easy install, and internal straps for luggage security. If you compare the Rhino-Rack MasterFit Rooftop Cargo Box to the Yakima SkyBox 16 Roof Cargo Box part # Y07335 and Thule Force XT L Rooftop Cargo Box part # TH6357B for example, they all have pretty much the same features but the MasterFit is much...
    view full answer...
  • Will Thule Sidekick Cargo Box Fit on 2021 Subaru Outback
    We do have an option for a rooftop cargo box that fits your 2021 Subaru Outback with crossbars that are spaced 30" apart, though the Thule Sidekick Roof Mounted Cargo Carrier Box # TH78GC won't fit as it is for crossbars that have a 23-5/8" to 28" spread. Instead, one option is the Trunx Rooftop Cargo Carrier # TRX44FR. The Trunx # TRX44FR will fit crossbar spreads of up to 30" though it does require drilling new holes in the bottom of the box in order to utilize its U-bolt mounting hardware....
    view full answer...
  • Can Rhino Rack MasterFit Roof Cargo Box RRRMFT440 Fit 2017 Toyota RAV4
    If your 2017 Toyota RAV4 has factory crossbars that go from left to right on the roof then yes the Rhino-Rack MasterFit Rooftop Cargo Box # RRRMFT440 would fit them directly. If you have rails that run front to back without crossbars though you'd need a set which the Rhino Rack Vortex rack part # RRVA126B-2 and # RRSX100 and you'd be set.
    view full answer...
  • Audi A3 /S/RS3 Roof Rack
    For your A3 Sedan the smallest Thule crossbars would be the 53 inch Thule # TH712400 crossbars. You would additionally need the # TH710501 feet and # TH145121 fit kit for your A3. However the smallest bars would be the Rhino-Rack # RR69XR cross bars at 41-7/8 inches of bar space - plus feet. Like the Thule they offer an aerodynamic shape that reduces wind noise and they are sporty enough looking to leave on full time. Once you have this rack on you can add snowboard and ski carriers,...
    view full answer...
  • What Tracks and Crossbars do You Recommend for My Pro Tops Camper 2019 Toyota Tacoma?
    With your ProTop camper shell on your 2019 Toyota Tacoma (6-foot bed), the system you need depends on how much length and width you have on your shell. For example, if you have a long shell with considerable width, I recommend the Rhino-Rack Aero Bar Roof Rack for Camper Shells - Track Mount - 54" # Y02-480B. This system comes with 62" tracks. For the optimum crossbars and track length, I recommend measuring the length and width of your Undercover shell. For a water-tight solution, we...
    view full answer...
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  • 2020 Honda CRV Roof Rack Capacity Options
    Certain manufactures give lower capacities to make sure the customers are being safe when using their products. That being said, always go by the lowest rated component. Your 2020 Honda CRV roof is rated for 165 so I would suggest not getting a Thule rack. I recommend getting the Rhino-Rack Vortex Aero Crossbars # RRVA137S-2, Rhino-Rack 2500 Series Legs # RRRLKVA, Custom DK Fit Kit # DK284. Rhino Rack rates this system for 165 lbs. I like the looks of this flat black roof box # TH6357B...
    view full answer...
  • Crossbar Spacing of Rhino-Rack Roof Rack on 2014 Ford Flex With Naked Roof for Rooftop Cargo Box
    The crossbar spacing of the Rhino-Rack roof rack on your 2014 Ford Flex with a naked roof - Rhino-Rack Vortex Aero Crossbars # RRVA150B-2, Rhino-Rack 2500 Series Legs # RRRLKVA, and Custom DK Fit Kit # DK188 - does need to be spaced at 31-1/2 inches apart, as per the manufacturer's instructions. This is the spacing Rhino-Rack determined was appropriate for your Flex in order to maintain the capacity and stability of the rack, so you will need to remain at this spacing. What you will need...
    view full answer...
  • Best Roof Rack for a 2013 Nissan Frontier with Factory Side Rails
    Good question. We have exactly what you're going to need to get your roof rack installed on your 2013 Nissan Frontier. It is a quick and easy installation that you'll have done in under a half an hour. You'll just need two part numbers to make this happen. I'll also provide a few of my favorite roof mounted accessories if you haven't already got what you need. By using Rhino-Rack Vortex Aero Crossbars - Aluminum - Silver - 46" Long part # RRVA118S-2 and Rhino-Rack SX Series Legs for...
    view full answer...
  • Crossbars and Feet for Rhino-Rack RT-Style Roof Rack Tracks on 2017 Toyota Tacoma for Cargo Box
    We have everything you need to add a roof rack to your 2017 Toyota Tacoma with the Rhino-Rack RT-Style Roof Rack Tracks # RRRTS547 on it; you'll need both the crossbars and the foot pack which hold the crossbars in place. For the foot pack that fits these tracks you will need the Rhino-Rack Quick Mount Legs for Vortex Aero Crossbars - RTC and RT Roof Rack Tracks # RRRLT600 and for the crossbars for your truck you'll need the Rhino-Rack Vortex Aero Crossbars # RRVA137B-2 (Black) or # RRVA137S-2...
    view full answer...
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  • Recommended Roof Rack For 2019 Honda Odyssey With Naked Roof
    In order to mount your Thule Cargo Box on the nakef roof of your 2019 Honda Odyssey you will need a crossbar setup. The best crossbar setup for your vehicle is the Rhino-Rack Vortex Aero Crossbars # RRVA126S-2. This is a 49" long low-profile crossbar with a weight capacity of 165lbs. It has a top channel / track to mount accessories and also has built-in locking endcaps to secure your track-mounted accessories. With this crossbar you will also need Legs # RRRLT600, Leg Spacers # RRQMVA10,...
    view full answer...
  • Middle-of-the-Road Roof Rack Recommendation for Roof Box on a 2012 Honda CR-V EX-L
    You are correct that there is a break-point in roof rack quality. A middle-of-the-road option that I recommend using for your 2012 Honda CR-V EX-L is the Rhino-Rack Vortex Aero Crossbar system which includes the following for your flush mount rails: 49" Vortex Crossbars - Black # RRVA126B-2 or Silver # RRVA126S-2 RCL Legs - # RRRCL4 RCP Fit Kit - # RRRCP33-BK The biggest differences between the Rhino-Rack setup vs a Thule setup for example is that the Thule pieces tend to fit together...
    view full answer...

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