The accel-E® Steel Thermal Efficient Panel (S.T.E.P.) by SYNTHEON Inc. is a high performance, one-step wall system that greatly improves energy efficiency.
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The accel-E® wall system achieves its excellent energy efficiency by fusing cold-formed steel framing components and expandable polystyrene (EPS) insulating panels together into a single continuous system. This eliminates air gaps, reduces thermal bridging and heat transference, blocks air intrusion, and adds thermal resistance. As a result, the accel-E® panels offer tested insulating values that far surpass other panel systems and traditional framing techniques.

The accel-E® steel framing members are made of recycled steel and are themselves recyclable. In addition, the EPS foam insulation does not emit harmful VOC gases, shrink, settle, or contribute to diminished air quality. Moreover, replacing conventional framing and insulation with pre-engineered accel-E® panels virtually eliminates jobsite waste and disposal issues - all of which further contribute to the system's LEED points.