RV Stabilizer Jacks from BAL are very popular with RVers. One of the most popular stabilizing unit is the Telescopic Stabilizing Jack . It is easy to install and requires no existing trailer frame cross member.
The jacks' adjustable length cross member will telescope to fit any underbody frame. Will fit most trailers - front or rear (U.S.Patent No. 5205586) Telescopic Jacks are mounted as an assembled unit Comes as a set of 2 (1 pair) with crank handle.
To determine which unit you need, determine the distance between the underbody frame and ground. This distance determines which of the following units should be used.
For more than 24" and less than 30", order 15-0309; Mfg: 30930 (Large) For more than 20" and less than 24", order Mfg: 24830 (Medium)