Our Large RV Skirt is designed for your RV ranging in length from 28 to 36 feet (per the manufacturer's specifications) and is perfect for nearly all makes and models due to AirSkirts' unique modular options. This kit weighs approximately 70 pounds, with the largest component weighing 9 pounds. Standard clearance kits are appropriate for RVs that sit lower than 21" off the ground. To determine which kit is right for you, simply check your ground clearance at the highest point. If it varies quite a bit, you'll need our customized kit. The AirSkirts welcome kit includes everything you need to get started with your new AirSkirts RV skirt, including our owner's manual which guides you through all of the important stuff you'll need to know to set up your kit and care for it. Be sure to read it thoroughly and watch our setup videos as well. Additional accessories, such as tire wedges, tire covers, and stair pillows are not included. We suggest purchasing tire covers if you have a dual axle and add tire wedges if you camp in extreme cold temps. You'll only need a stair pillow if your steps pull down from underneath the chassis of the RV. Concerned you don't have the right kit? Don't worry - after you submit your order, one of our engineers reviews the information you provide about your setup and confirms that the kit will work. If you've ordered the wrong kit, someone will reach out to you. And always feel free to call or email with any questions!