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Our tubes come in two diameters:

• Standard – 22″ diameter, suitable for ground clearance up to 20″
• High – 34″ diameter, suitable for ground clearance up to 32″

Ground clearance refers to the amount of space between the earth and your trailer. The clearance is measured from the ground to the point on the underside of the trailer that the tube will press against. If your trailer is on uneven ground, measure the greatest distance. For trailer with flat bottoms, measure to the bottom of the trailer. If your trailer has an exposed I-Beam, measure to the base of the I-Beam.