Check the listing for details. 4ft x 25ft Reflective Foam Core SAUNA Floor Underlayment Concrete Insulation. Condition: New. Listed at 59.88 USD. Item Description:Supershield NasaTek 4ft x 25 ft foam core reflective insulation Saves up to 20% of Energy bills, adds R-7 to performance Lightweight and Easy to Install Hypo-Allergenic Indoor Air Quality Rated and Non Toxic, No Skin, Eyes or Throat Irritation Passes Stringent California Water Heater Insulation Fire Test, Class 1, Class A Fire Rated Increases Recovery Rate of Tank During Cycles, mold and mildew resistant unaffected by humidity and moisture1/4 inch thick double sided foam core Made in the USA Product: Foam Core laminated between two layers of highly reflective radiant barrier foil. Contact Temperature Range: -60°F To 180°F (-51°C To 82°C) Water Vapor Transmission: .02 Perms**** Puncture Resistance: 60 Lbs. Per In.*** Pliability: No Cracking Linear Shrinkage: None Mold And Mildew: No Growth Flame Spread: 0 Astm E84-08 Smoke Development: 40 Astm E84-08 Fire Rating: Class A / Class 1 Reflectivity: 95% Motor Vehicle Safety Standard 302: Zero Surface Burn Rate Emittance: 0.04**** Benefits: • 100% Made in USA• Only Energy Star Rated Foam Core Reflective Insulation on the planet!!! • Blocks radiant heat by up to 95% • Reduces Heating and cooling loss • Foam Core Sound Reduction Technology • Saves you Energy and Money • Easy to use and install • Requires no protective clothing or special tools • Requires no maintenance • Highly Durable, Lasts Longer • Meets new ASTM Fire codes