The U-Leg Kit is used for Jiffy bases that do not attach directly to the floors of the RV. The durable, sturdy U-legs are made of powder-coated 16-gauge steel and designed to fit all Jiffy Sofas. The rails are used to support the Jiffy on a flat floor. Simply bolt the legs onto the bottom of the Jiffy seat frame with the appropriate base rail kit (sold separately). Attachment may vary depending on where the Jiffy is being used. Mounting hardware is included. Note: Base rails are sold separately. Attaches to the bottom of the Jiffy sofa with base rails (sold separately) Made of powder-coated 16-gauge steel U-legs & hardware only; base rails are sold separately | Camping World Universal U-Leg Kit for Jiffy Sofas