CURT 28204 A-Frame Trailer Jack, 3,000 lbs. Support Capacity, 15 Inches Vertical Travel. Trailer jacks a-frame are madewith quality to promote the life and function of your trailer, Designed specifically for A-frame trailers. They can be bolted or welded directly onto the trailer frame. A-frame jacks are made to retract completely to ensure enough clearance for safe travel. Features a support capacity of 3,000 lbs., a lift capacity of 2,000 lbs., a travel of 14-1/2" and a side-wind handle.