Andersen Hitches EZ Block 3621 Stackable RV Jack Block — 2,000 lb Heavy-Duty Leveling Support

The Andersen Hitches EZ Block 3621 is a heavy-duty, stackable RV jack block and leveling stabilizer rated for 2,000 lbs to secure and level bumper-pull trailers and campers.

Designed for RVers who need a compact, reliable support under trailer jacks, the EZ Block combines a recessed post hole that prevents jack slippage with a robust, stackable design for extra height on uneven ground. Manufactured in the USA and backed by a lifetime warranty, this block gives a stable footprint on soft, rocky, or irregular surfaces and simplifies setup and breakdown at camp.

How does the EZ Block keep my trailer jack from slipping?

The EZ Block features a deep, 2-1/2" recessed post hole that centers and cradles post-style jacks so they stay aligned under load rather than sliding off when pressure is applied. That secure fit reduces wobble and concentrates weight safely on the block.

• 2-1/2" diameter recessed hole for post jacks
• Engineered to stop lateral jack movement under load
• Stable contact area disperses pressure on soft ground

Can I get more height when the campsite is uneven?

Yes — EZ Blocks are built to stack two high for added elevation, letting you gain up to about 14" when a single block isn’t tall enough. Stacking increases height without sacrificing the secure jack seating provided by the recessed hole.

• Stack two blocks for greater reach (do not exceed two stacked)
• Each block aligns for a snug fit when paired
• Use stacking to correct tilt or reach jacks on irregular ground

What load can the Andersen EZ Block support, and how is it used?

The EZ Block 3621 is rated to support 2,000 lbs either as a single block or when two blocks are double-stacked for extra height. It’s intended for use with bumper-pull trailer stabilizer jacks and RV post jacks to provide a stable base and distribute weight.

• 2,000 lb rated capacity for single or double-stacked configurations
• Use with most post-style trailer jacks and stabilizer stands
• Integrated finger holes for easy lifting and positioning

What practical features make setup easier at the campsite?

Small but thoughtful design details speed setup: molded finger holes act as handles so you can move the blocks even with gloved hands, and the low-profile footprint sits flat against the ground to minimize rocking. The unit’s durable construction resists cracking and deformation under repeated use.

• Finger holes on each side for transport and placement
• Low-profile design reduces rocking on uneven surfaces
• Durable molded construction resists wear and weather

Who is this for? The Andersen Hitches EZ Block 3621 is ideal for RV owners, trailer renters, and anyone who uses bumper-pull campers or utility trailers and wants a compact, durable solution for jack support and leveling. It’s especially useful for those who frequently camp on soft soil, gravel, or uneven turf and need a dependable base without bulky equipment. Backed by Andersen’s lifetime warranty and made in the USA, it suits weekend campers, full-time RVers, and service professionals who demand consistent, long-lasting performance.