The OZTENT RV-4 is an evolutionary change on the RV-3 model. It maintains the same pack size as the RV-3 but has an innovative pullout floor section at the back to give you more space. Bigger tent same pack size! The RV-4 offers a one person set up in less than 30 seconds making it ideal for teardrop trailers, travel trailers & RV's! When used with a caravan connector accessory allows a connection from the RV to the front awning of an RV4 with the use of a sail track (provided on most RV unit). By attaching an awning connector accessory to 2 RV4's expands the size of the living area, Teardrop trailers also benefit using the RV4 as a side tent accessory, providing a space out of the elements, changing clothes or a cooking area under the front awning. Adding the peaked side panels or using the deluxe front panel creates a partial or full enclosure for privacy. The back room is an ideal space for gear storage or additional sleeping area for guests!