Samsonite 49866-2906 7700 Series 6-ft. Blow Molded Folding Table, Lightweight and Built to Last, 6 Foot, Gray 16 Gauge Rectangular Tube Frame for Added Rigidity High-Density Polyethylene Top for Durability and Easy Maintenance HDPE is also somewhat harder and more opaque and it can withstand rather higher temperatures Tubular steel side rails with Fully-welded connections for strength More closely packed structure with a higher density and somewhat higher chemical resistance than low-density polyethylene (LDPE)