A portable jack pad gives a trailer tongue jack, scissor stabilizer or landing-gear foot a larger rubber contact surface on the ground. Stromberg Carlson's loose Base Pads come in four physical sizes. They are made from molded EPDM rubber and sit beneath the jack; unlike the company's Base Pad Shoes, they do not remain attached to the leveling foot.

Find the Base Pad size and package

Part number Pad dimensions (L × W × H) Manufacturer package
JBP-69.625 9 × 6 × ⅝ in 4 pads
JBP-1011.1 11 × 10 × 1 in 2 pads
JBP-1214.1 14 × 12 × 1 in 2 pads
JBP-1214.2 14 × 12 × 2 in 1 pad

The manufacturer specifies up to 30,000 lb under even loading for its EPDM Base Pad family. That is a pad rating under stated conditions, not an increase in the RV's jack capacity, axle rating or permissible supported load. Confirm the jack foot fits fully on the pad and the supporting ground is suitable.

What to measure

Two dimensions matter before you choose
Foot-contact area

Measure the length and width of the jack's existing metal foot. It should rest securely inside the pad's usable area.

Pad thickness

The four versions are ⅝, 1 or 2 inches thick; do not confuse the thickness with the pad's footprint.

Ground surface

Choose a stable, level support area without voids or sharp features that would create uneven loading.

Sizes are manufacturer dimensions; this is an original comparison, not a scaled installation diagram.

Compare the four exact products

Loose pads versus stay-attached shoes

These loose rubber pads can be positioned at a campsite as needed and removed afterward. The separate Base Pad Shoe reference covers models that fit around a leveling foot and remain attached. Do not select a shoe by these loose-pad dimensions.

Using a pad beneath a jack

  1. Park on suitable ground and follow the RV maker's leveling or stabilizing instructions.
  2. Centre the metal jack foot on the chosen pad and keep the supporting surface as flat as possible.
  3. Check that the pad does not rock, slide or bend against an uneven obstruction.
  4. When breaking camp, raise the jack according to its instructions and collect any loose pads.

Manufacturer reference: Stromberg Carlson Base Pads specifications, size chart and jack-foot comparison.

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