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MegaDeck HD+ — Mat Specifications
Overall Dimensions: 7.5′ L × 14′ W × 4″ H | Overall Coverage: 105 sq ft per mat
Usable Dimensions: 6.5′ L × 13′ W | Usable Coverage: 84.5 sq ft per mat (flange-adjusted)
Weight: ~1,025 lbs per mat | Load Rating: up to 600 psi
MegaDeck HD+: Heavy-Duty Composite Matting for Extreme Loads
When you have to move cranes, rigs, or the heaviest tracked equipment across soft, muddy, or sensitive ground, you need a mat that won't flex, crack, or sink.
MegaDeck HD+ sits at the top of the composite-mat range — engineered for the loads lighter mats can't touch, and built to last 10+ years.
600 psi
86,400 lb per ft²
105 ft²
per mat (7.5' × 14')
~1,025 lb
per mat · 4" thick
10+ yrs
reusable service life
Built for Extreme Loads
Rated to 600 psi for cranes, rigs, and the heaviest equipment.
MegaDeck HD+ carries up to 600 psi — 86,400 lbs per square foot — making it the right platform for cranes, drilling rigs, and heavy tracked equipment on soft or unstable ground. The secret is the cross-ribbed interior, which spreads weight evenly across the whole panel instead of letting it concentrate at one point. That even distribution is what keeps the mat stable in swampy and muddy conditions where lighter mats would dish or fail.
Engineered to Outlast Plywood
Stackable, reusable, and built to outlast plywood.
Built from HDPE with special impact modifiers, MegaDeck HD+ won't rot, warp, crack, delaminate, or absorb water and contaminants the way plywood does. The composite is UV-resistant, non-conductive, chemically inert, and flame-rated (UL-94 HB) — a real advantage on power-transmission and oil-and-gas sites. Mats clean up with a pressure washer and redeploy job after job for 10+ years, and they won't carry contaminants between sites. They also ship efficiently: roughly 50% more MegaDeck mats fit on a truck than 3-ply bolted mats, with 40 to a standard container.
The Locking System: MDX Pins & S2 Lock
Molded pin holes show locked or unlocked at a glance.
Overlapping flanges lock together with MDX alloy pins or S2 Lock technology — 8 pins per mat — to build one continuous surface that won't drift, separate, or lift under heavy rolling loads or over soft ground. The pin hole is molded into the mat and clearly shows whether a connection is locked, so crews can verify the surface fast. The system pairs an alloy pin with flexible plastic to hold up under the most extreme loads and impacts.
Sizing Your Project
Size by usable coverage, not just overall dimensions.
Each mat measures 7.5' × 14' × 4" for 105 ft² overall, but plan your layout on the usable coverage of 84.5 ft² (6.5' × 13') once the flanges overlap. Divide your platform or roadway area by the usable figure to get a starting count, then account for the connection layout. MegaDeck HD+ carries a 5-mat minimum, and the calculator on this page turns your dimensions into an exact mat count so you order right the first time.
Important: Not for Bridging
MegaDeck HD+ distributes load across the ground beneath it — it doesn't span gaps. Always lay mats over continuous supporting subgrade, never across open trenches, voids, or unsupported spans. Solid ground contact is what lets the mat carry its rated load safely.
Quick Planning Checklist
1. Confirm the load: MegaDeck HD+ is built for cranes, rigs, and the heaviest equipment (up to 600 psi)
2. Measure your platform or roadway area
3. Size by usable coverage — 84.5 ft² per mat, not the 105 ft² overall
4. Plan on 8 pins per mat and a 5-mat minimum order
5. Lay over continuous ground — never bridge gaps or trenches
The MegaDeck HD+ Mat ships free and is built by Signature Systems for the toughest ground conditions in construction, oil and gas, and power transmission.
Ready to size your job? Use the MegaDeck Calculator Tool above — enter your dimensions and it returns the exact number of mats (and pins) you'll need.
