YUNNIEHOM Trailer Jack Block 6-inch Heavy-Duty Stackable RV Leveling Block with 11.5-inch Base

Built from high-performance polymer with UV and anti-aging additives, this 6-inch jack block gives a wide, sturdy base that resists dirt, oil and weathering. It’s designed to work with most trailer and tongue jacks, scissor stabilizers, and post feet so you can level and support your travel trailer, fifth wheel or camper on uneven ground without improvising with boards or rocks.

How does this block make setting up camp faster and more secure?

The YUNNIEHOM 6" block reduces setup time by offering an immediate, stable surface for jack feet and stabilizers. Its 11.5-inch wide base spreads load across soft or uneven ground, cutting sink-in and wobble. Stackable design lets you add height quickly without additional tools.

• 6 inches of lift per block for rapid height adjustment
• 11.5" extra-wide base stabilizes on gravel, grass, dirt, or pavement
• Supports up to 40,000 lbs when used as intended
• Stackable modules allow incremental leveling and stability

Will this fit my trailer jack, scissor stabilizer, or 5th wheel pin?

The block is engineered for universal compatibility with most jack feet and stabilizer types, including round, square, scissor and post-style feet. A large top recess accepts common foot shapes and prevents slipping while in use. You can rely on the fit across many RV and trailer models without modifying your hardware.

• Universal top recess accommodates varied jack foot shapes
• Works with tongue jacks, wheel jacks, and scissor stabilizers
• Secure grip reduces lateral movement under load

How durable is the material for long-term outdoor use?

Manufactured from reinforced polymer with UV and anti-aging compounds, the block resists cracking, abrasion and chemical exposure common on the road. It’s built to withstand repeated compression and exposure to sun and grime so you can count on consistent performance season after season. Cleaning and storage are straightforward to keep the pieces serviceable.

• High-performance polymer resists UV degradation and oil
• Designed for repeated load cycles and outdoor exposure
• Easy to clean — hose off dirt and debris after use

How portable and convenient is the YUNNIEHOM leveling block?

Each unit includes a molded side hole and rope for easy lifting, carrying, and hanging when not in use—no separate bag required. The lightweight polymer construction keeps overall kit weight low while maintaining strength, making it practical to stow in a compartment or hang on a hook at home or in the RV bay.

• Built-in side hole and rope for convenient handling and storage
• Compact, stackable shape saves storage space
• No additional storage accessories needed; hangable design

Who is this for? The YUNNIEHOM 6" Trailer Jack Block is ideal for RV owners, weekend campers, and travel trailer enthusiasts who want a dependable, universal solution to level and stabilize their rigs. If you frequently camp on soft ground, gravel or uneven sites, or if you value fast setup and long-lasting gear that resists sun and road grime, this block is a practical addition to your towing toolkit. Backed by customer support, it suits both casual travelers and experienced rig owners looking to replace makeshift supports with a purpose-built product.