Insulated Strut Clamp Clamp Material Steel Clamp Material Finish Zinc-Plated Clamp Type Cushion Clamp Cushion Material Polyurethane For Insulation Thickness 1/2 in For Maximum Outside Diameter 1/4 in For Strut Channel Width 1 5/8 in Included Insulation Thickness 1/2 in Maximum Operating Temperature 250 Degrees F