YUNNIEHOM Trailer Jack Block 6"H RV Stabilizer & Leveling Block, 11.5" Wide Base, Stackable with Carry Bag

YUNNIEHOM Trailer Jack Block 6"H is a heavy-duty, stackable leveling and stabilizer block that fits virtually any tongue jack, post or scissor stabilizer to give your travel trailer a stable, elevated base.

Designed for RV and camper owners who need a dependable, compact solution for leveling and stabilizing on uneven ground, this 6-inch block combines durable polymer construction with an extra-wide base to prevent sinking and rocking on gravel, grass, or pavement. The blocks resist UV, oil, and grime, stack securely for additional height, and include a carry bag for neat storage and transport.

How does this jack block improve trailer stability?

The wide 11.5" base distributes weight across more surface area, reducing the chance of sinking into soft ground while the textured top cradles jack feet to prevent slipping. Each block is rated to support heavy loads and can be stacked to reach the height you need without compromising strength.

• 11.5" extra-wide foundation for better weight distribution
• Textured cradle grips jack feet and prevents side-to-side movement
• Single block supports substantial loads and stacks securely

Will this fit my jack, post, or stabilizer?

The YUNNIEHOM block is designed with a universal top profile that accommodates round, square, and irregular-shaped jack feet, including tongue jacks, post feet, scissor stabilizers, and wheel jacks. Its universal fit eliminates the need for multiple adapters and works with most common RV and trailer configurations.

• Compatible with tongue jacks, wheel jacks, scissor stabilizers, and posts
• Top cradle accepts round and square feet without additional hardware
• Stackable design allows for custom height adjustments

How durable and weather-resistant are these blocks?

Made from high-performance polymers blended with UV and anti-aging additives, these blocks resist cracking, deformation, and surface wear caused by sun exposure, oil, or dirt. They are intended for long-term outdoor use and maintain structural integrity under repeated load cycles.

• UV- and oil-resistant polymer construction
• Engineered to stand up to dirt, grime, and outdoor conditions
• Maintains shape and load capacity over repeated use

How easy are they to transport and store?

Each block includes an integrated side hole for a rope and comes with a storage bag for tidy, space-saving transport. The built-in carry feature makes deployment quick and keeps blocks organized in your RV garage or truck bed when not in use.

• Built-in side hole and rope for simple lifting and hanging
• Includes a compact carry bag to keep blocks together and protected
• Lightweight design for easy handling without sacrificing strength

Who is this for? YUNNIEHOM Trailer Jack Block 6"H is ideal for RV, camper, and trailer owners who camp on mixed surfaces, tow frequently, or need reliable leveling and stabilizing without bulky equipment. It's suited for solo travelers, families, and professional haulers who want a compact, durable solution that fits most jacks and stabilizers. If you need a stackable, weather-resistant block to prevent sinking and increase lifting height while keeping storage tidy, this product is made for you.

Features

• Sturdy polymer construction with UV and anti-aging additives
• Universal fit for trailer jack feet, tongue jacks, wheel jacks, and scissor stabilizers
• 6-inch height per block and 11.5-inch extra-wide base for stable lift
• Integrated side hole, rope, and included storage bag for easy carry and storage
• Dedicated customer care for assistance and satisfaction