4 Pack Lot ESP Low-E® Size 48x50 Includes 50 Foil Tape EACH, Knife Squeegee. For 25 Years ESP Low-E Reflective Insulation has provided additional energy efficiency and comfort in residential and commercial buildings around the world. Now, Low-E SSR provide the same benefits for your building project, addition or just everyday needs. Combining 7/32 Closed Cell Foam (not bubble packaging material) and Pure Aluminum Foil (not metalized plastic) The Low-E SSR line of products provides performance and appearance for your Insulation upgrades of choice. The Low-E SSR line is available in multiple widths (16",24",48") This 48"x50' was originally designed for over or under studs, rafters girts, purlins as it is one of our most versatile products. Examples of this would be Insulation Metal Buildings, Post Frame, Garages, Sheds, Homes etc. However we have found over the years that uses for the Low-E products are used for more than just building insulation. Here are just a few examples where people have used Low-E : Behind home Radiator, Window Air Conditioner Wrap, Utility Shed, Toy Haulers, Customized Window Shades for RV's and Cars, Tire Covers for the Same RV, Ice Chest Wrap or Liner, Carpet and Floating Floor Underlayment, Automotive Restoration Project for Headliner, Doors, Hoods and Firewall, Mobile Home Skirting, Tent and Sleeping Bag Mat, Above Ground Pool Padding for Walls and Floor, Frost Barrier, Dog House or Chicken Coop Insulation and so many more. We have fun finding new uses so every purchase includes an offer for free additional products by simply sharing your install with us on Facebook. Low-E meets the Indoor Air Quality standards set forth by California 01350, is mold and mildew resistant as well as a vapor barrier. The only tools needed normally to apply Low-E are Staple gun, Tape Measure, Utility Knife and Safety Glasses.