Passage: Modern pop-ups range in weight from approximately 700 pounds (320 kg) to 3,800 pounds (1,700 kg) pounds empty or full. Models are generally classified by the length of their box, which ranges from 8 feet (2.4 m) to 16 feet (4.9 m). When opened, the length is roughly double the box length. Most pop-ups are between 7 feet (2.1 m) and 7 feet 6 inches (2.29 m) in width and between 4 feet 6 inches (1.37 m) and 5 feet (1.5 m) in height when closed, but "high wall" models are tall. Published sleeping capacities range from 4 to 8 people.

Question: Based on this passage, what is the weight of a pop up camper?
Steam of consciousness below:
To answer the above question, the relevant sentence is: Modern pop-ups range in weight from approximately 700 pounds (320 kg) to 3,800 pounds (1,700 kg) pounds empty or full.
So, the answer is 700 pounds ( 320 kg ) to 3,800 pounds ( 1,700 kg ).