Thule Stacker kayak rack vertical Kayak Mounts The Thule Stacker is a space-saving vertical kayak carrier designed to transport up to four kayaks efficiently by stacking them on their sides. This fold-down steel carrier is the perfect solution for families or groups who need to maximize roof space for other accessories like cargo boxes or bike racks. Featuring a non-scratch outer coating and a durable build, this made-in-the-USA carrier provides a secure and reliable way to get multiple watercraft to the water. Compact and Space-Saving Design Optimized vertical orientation leaves ample room on the roof for additional Thule accessories. Fold-down steel design reduces vehicle height when the carrier is not in use for better aerodynamics. Non-scratch outer coating protects your kayak hulls from damage during transport. Accommodates a wide variety of hull shapes by supporting them on their side. Quick Installation and Universal Compatibility Fast installation and removal process thanks to intuitive quick on/off hardware. Fits a wide range of Thule rack systems including WingBar Evo, Edge, and SquareBar Evo. Compatible with round bars and most factory-installed rack systems. Adapter Kit Xadapt3 is required for specialized fitments like Thule ProBar Evo and Xsporter Pro. High Capacity and Durable Performance Capable of carrying up to 4 kayaks with the appropriate additional tie-down straps. Supports individual kayaks up to 36 inches wide and weighing up to 75 lbs. Heavy-duty steel construction ensures long-term durability and stability on the road. Includes a set of 15-foot straps with rubber-covered buckles to protect your vehicle and gear. Technical Specifications and Load Limits Primary Watercraft: Kayak. Load Capacity: 75 lb. Dimensions: 5 x 5 x 20 inches (LxWxH). Product Weight: 7.1 lb. Strap Length: Two 15-foot straps included. Country of Origin: USA. Fitment and Compatibility List Fits Thule WingBar Evo and WingBar Edge. Fits Thule SquareBar Evo. Fits Thule ProBar Evo (requires Thule Adapter Kit Xadapt3). Fits Thule Xsporter Pro (requires Thule Adapter Kit Xadapt3). Fits Thule Xscape and Thule TracRac Van (with adapter).