MegaDeck Composite Heavy Duty Work Site/Rig Mats. Modular Access Heavy Duty Composite for high traffic work sites. Made from Non-adsorbent High-Density Polyethylene. Supports the heaviest equipment in any climate over any terrain. 12" flanges guide Mats into place allowing them to lay together seamlessly. Uses locking system to easily connect panels. Size: 7.5’ x 14’ x 4” (thick); Weight: 1,150 lb ea.; Weight Load: 600 lb sq/in; Applications: Oil & Gas, Construction, Mining, Trenching & Shoring, etc. Hundreds in stock, available immediately. Quantity Discounts available. Call for details.