Features. Corrosion and rot-proof. Will not absorb moisture. Will support a 20 ton Air Hydraulic Jack. Works great with RVs Trailers Big Hauling Trailers Boat Trailers and many more. Will not break under load mushroom or warp. Great in soft earth or uneven ground. Allows Employer to comply with OSHA Regulation 29 CFR 1926.305 Blocking for a Firm Foundation

• Corrosion and rot-proof
• Will not absorb moisture
• Will support a 20 ton Air Hydraulic Jack
• Works great with RV"s, Trailers, Big Hauling Trailers, Boat Trailers, and many more
• Will not break under load, mushroom, or warp

Corrosion and rot-proofMDC