LUSHIH RV Slide-Out Support Jacks 2-Pack 21.4–40" Adjustable — 5,000 lb Zinc-Coated Stabilizers

The LUSHIH RV Slide Out Support Trailer Stabilizer Jacks are a two-pack of heavy‑duty adjustable slide‑out supports rated to 5,000 lb each with a travel range of 21.4" to 40" for reducing trailer rock and protecting slide‑out mechanisms.

When you park your RV, unwanted movement from people walking or kids playing can stress slide‑out frames and interior fixtures. These LUSHIH stabilizer jacks are designed to brace slide‑out sections, absorb side‑to‑side motion and offer a corrosion‑resistant steel build so they keep performing season after season. They provide targeted support beneath the slide‑out periphery without lifting the trailer off its wheels.

How do these stabilizer jacks reduce slide‑out wobble?

The LUSHIH jacks create a rigid secondary support point under your slide‑out, preventing the frame from flexing when the RV is occupied. Their triangular threaded screw and M18 nut provide fine, secure adjustment so you can dial in the right pressure without stripping components. Note: they are stabilizers, not primary lifting devices.

• Stops lateral and vertical play to protect slide‑out seals and mechanisms.
• Triangular threaded screw with M18 nut for reliable, repeatable adjustments.
• U‑shaped top (5.94" x 2.95" x 0.9") fits most slide‑out frames; use a 2x4 for extra protection.

What are the size and load specifications I need to know?

Each jack travels from 21.4" to 40" with a recommended working range of 19" and a maximum lift capacity of 5,000 lb (2,267 kg) per jack. The zinc powder‑coated steel finish helps resist rust so the jacks last outdoors. Always check clearance before operating and never use them to lift or level your trailer.

• Travel range: 21.4"–40" per jack.
• Working range: 19" (recommended usable adjustment).
• Maximum capacity: 5,000 lb (2,267 kg) each.

How should I install and use these slide‑out supports safely?

Position one jack under each outside corner of the slide‑out frame and raise until firm contact is made; adding a 2x4 across the top spreads load and prevents frame damage. Operate in small increments and keep hands clear of moving parts. The product includes two quick‑lift jacks—ensure adequate clearance and never place them under a loaded or lifting axle.

• Place jacks under the U‑shaped top pads; add a wood 2x4 for protection.
• Raise/adjust evenly and avoid using jacks to lift the trailer off its wheels.
• Keep area clear while lifting or lowering; inspect threads for wear before use.

Will these jacks fit my RV’s slide‑out frame?

The U‑shaped top measures 5.94" x 2.95" x 0.9" and is sized to accommodate most slide‑out frames; compatibility is increased by using a protective board across the top. Because RV slide‑outs vary, check the top dimensions against your frame and allow room for a 2x4 if needed. If your frame has unusual geometry, measure before purchase.

• U‑shaped top dimensions provided to verify fit.
• Use a 2x4 to adapt to different frame shapes and protect metal edges.
• Not intended for unusual or nonstandard slide‑out supports without verification.

Who is this for: The LUSHIH slide‑out stabilizer jacks are intended for RV owners and campers who want to reduce interior rocking and protect slide‑out frames while parked. They suit travel trailers, fifth wheels and motorhomes with standard slide‑out frames that fit the U‑shaped tops. Choose these if you need heavy‑duty, corrosion‑resistant supports for routine campsite stability—remember they stabilize, not lift, the trailer.