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 by using the Mesh Floor Saver allows for an easy clean up while not accumulating water! Adding the Deluxe 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!