Truck campers mounted on pickup trucks are the most popular. A unit referred to as a slide-in, or cab-over is lowered or slid into the bed of the pickup then secured in place using tie-downs and turnbuckles. Pickup campers can be mounted on trucks as small as half-ton models, also known as light-duty pickups, such as the Ford F-150, Ram 1500, Chevrolet Silverado 1500, GMC Sierra 1500, Nissan Titan and Toyota Tundra. These trucks are rated to carry loads up 1,000 lbs. making them suitable for small slide-ins. Larger camper units require a three-quarter or one-ton pickup. Flatbed truck campers are mounted on trucks with a flatbed. And as the name suggests, they are built with no fixed sides, tailgate or roof. Tie-downs are typically located along the side of the trailer. Some people remove the truck bed from their pickup truck and replace it with a flatbed. Some flatbed truck and campers can range up to 53 feet long, accommodating a larger, more roomy camper body, although most camper bodies are 6.5 to 11.5 feet in length. The resulting vehicle often looks much like a Class C RV. The difference being that the camper portion can be lifted off, allowing the vehicle underneath to revert to use as a truck.