The Thule 687XT Atlantis 1800 Silver has been replaced by the Thule 635S Sonic XL Silver
Thule 635S Sonic XL Silver

Thule 635S Sonic XL Silver

The Thule Sonic Box combines efficiency with style. It's designed for those looking for an aerodynamic box with a wide variety of sizes and convenience options. The Thule 635S Sonic XL Silver has a 17 cu.ft. cargo capacity.

Thule 687XT Atlantis 1800 Silver

Thule 687XT Atlantis 1800 Silver
  • Thule 687XT Atlantis 1800 Silver Alternate Image Thumbnail
Status: Discontinued

Product Code: 100687XT


The Thule 687XT Atlantis 1800 Silver is a premium cargo box with a new reinforced lid and ergonomic lock knob for increased security, gear protection, and opening or closing. The Thule 687XT Atlantis 1800 Silver has a 18 cubic foot storage capacity.


  • Reinforced lid and redesigned lid lifters provide smooth, effortless dual-side opening and closing
  • Box Outer Dimensions: 84 x 16.9 x 34.4 inches
  • Carries 18 cubic feet or up to 110lbs of cargo
  • Oversized ergonomic lock knob is easier to grasp and turn, even when wearing gloves
  • Aerodynamic design minimizes wind resistance for greater fuel efficiency and quieter travel
  • QuickGrip mounting system for fast, easy, and tool-free installation and removal
  • SecureLock ensures that all gear is locked and box is properly closed prior to driving
  • Includes two Thule locks securing box contents and locking the box to the roof rack
  • Fits all Thule load bars, Yakima crossbars, and most factory roof racks

Buying Notes

The Thule Atlantis will ship directly from Thule, please allow 7 - 14 business days for delivery.


Weight: 47lbs

Length (carton): 84"

Width (carton): 36"

Height (carton): 16"

UPC: 091021687967

Manufacturer: Thule

Manufacturer Part Number: 687XT

Ask A Tech if This Rack Fits Your Car

Thule Warranty

Thule warranty information.

Thule Warranty

 Add a Review

Your Review


Vehicle Select


I was advised by a Rack Attach technician that the 1600XT was the largest Thule box that would fit our new Highlander, but I had seen photos of the 1800XT box on another Highlander on a Toyota enthusiasts' forum and decided to risk it. Mounted on Thule RB53 Rapid Aero Bars and 450R Rapid Crossroad towers attached to the factory rails, the box has minimal but sufficient clearance to the rear-hatch spoiler with the hatch open. This will make a great camping box for our family.

2009 Toyota Highlander Sport


Frequently Asked Questions

Below you will find a list of the most frequently asked questions for this product. If you need more assistance you can email a rack-install technician, or call us at: 1-888-399-7225

If you drive an SUV or van, probably not. Be sure to measure the total height of the vehicle with the Thule 687XT Atlantis 1800 Silver installed, and keep that information handy (on the inside of your sun visor is a great place). Running into your garage will, unfortunately, void the box's warranty.

While the weight limit of your roof rack may differ, cargo boxes can hold up to 165 pounds.

As long as your vehicle is equipt with the crossbars (side to side) then all of our cargo boxes will attach directly to the rack. If you have a rear hatch, make sure to measure how much room you have and compare to the box length to make sure the hatch won't hit the box when opening. If you don't have crossbars, you will first need to add those prior to adding in a cargo box.

Related Products