Thule Sidekick Cargo Box Space-saving design carries the load with room for other items on roof rack Sturdy U-bolts with reinforcement plates mount cargo box securely to the rack Passenger-side opening for easier loading and unloading External dimensions 54 x 25 x 15.5 in Internal dimensions 48 x 23 x 13.5 in Load capacity 75 lb. This item requires significant assembly. Refer to installation manual under Product Details below. Please check Buyers Guide for vehicle fit information