Summit 3000 -
R Value: 6.58 Triple-Layer: Steel + Insulation + Steel For the toughest, most energy-efficient steel door, an Oak Summit 3000 triple-layer door includes the ultimate in thermal properties, plus a layer of steel for a finished interior look and added durability. •Heavy-Duty Exterior and Interior Steel • Durable, Reliable, Low Maintenance •Environmentally Safe Polyurethane Thermal Insulation • Superior Energy Efficiency •Extra Quiet Operation
Also see the Armarr Classica 3000