Check the listing for details. REFLECTIVE FOAM CORE HOT COLD FREEZER PACKING STORAGE INSULATION 4' X 4'. Condition: New. Listed at 14.88 USD. EXTREMELY EFFECTIVE - Reflects 95% of radiant energy, perfect RADIANT BARRIER. R-value up to 15.67 ( with one layer), up to 21.10 ( with two layers). VAPOR BARRIER - prevents condensation, unaffected by humidity and moisture! MEETS OR EXCEEDS ALL ASTM C1313 STANDARDS - Class A Fire Rating (E84 with E2599 mounting). Corrosion resistance according to D3310 is achieved by a proprietary clear coating applied to the Engineered Foil surface. INDUSTRIAL / COMMERCIAL GRADE - US ENERGY PRODUCTS -5mm Foam Core Reflective Insulation is TEAR & PUNCTURE PROOF, but you can easily cut it with utility scissors. Both sides reflects 95% of the radiant heat. PAYS FOR ITSELF - by reducing heating cost in winter and cooling cost in summer. NON TOXIC - will not irritate skin, eye or throat. Non allergic. SIZE: 48INCH X 4FT 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