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One interlocking block, 40,000 lb capacity — stack to any height you need
Last reviewed: March 2026
Single interlocking HDPE jack block rated for 40,000 lbs. Stackable design locks together with other EZ Jack Blocks for custom height adjustment up to 3.5 inches. Works under stabilizer jacks, tongue jacks, and leveling jacks.
At a glance
Why this product
This is Andersen's answer to the traditional jack pad — one solid HDPE block rated at 40,000 lbs that interlocks with others for custom stacking. The interlocking tabs are the key feature here. Regular blocks can shift under load; these lock together. Buy the quantity you need for your setup.
Detailed specs
| Leveling Type | Stackable Block |
| Weight Capacity | 18144 kg |
| Max Lift Height | 8.9 cm |
| RV Type Compatibility | travel_trailer, fifth_wheel, class_a, class_b, class_c |
| Interlocking | Yes |
| Pieces Per Set | 1 |
| Anti-Slip Surface | Yes |
| Storage Bag Included | No |
| Material | HDPE |
| UV Resistant | Yes |
| Freeze Resistant | Yes |
Best prices
| Retailer | Price | Status | |
|---|---|---|---|
| Amazon | Check price | Check availability | Check Price |
Disclosure: MyCargoRacks.com is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more
Disclosure: MyCargoRacks.com is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more
Price may vary. Prices and availability are subject to change.
Performance analysis
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