3M Indoor Patio Door Insulation, Insulator Kit for 6'-8" x 9' ft Patio Door, Keeps Cold Air Out and Warm Air In, Includes Heat Shrink Window Film and Scotch Window Film Mounting Tape (2144W-6)

With the 3M indoor patio door insulator kit, you can lower your heating bills during the winter and make your home more energy-efficient. Part of 3M's line of energy-saving products, this kit includes insulation film and a roll of double-sided mounting tape to create an airtight seal. Stretching the film removes wrinkles for a transparent view. This kit enables you to insulate one patio door measuring 6 feet 8 inches by 9 feet.

2144W Indoor Patio Door Insulator Kit At a Glance: Insulation film to insulate one patio door Double-sided mounting tape with ready-to-peel liner Transparent, wrinkle-free fit Backed by a limited warranty

As shown in these before and after shots, the insulation film attaches neatly to your patio door to keep the heat in and the cold out (click each to enlarge).

Double-Sided Mounting Tape for a Secure Seal
Included with this kit is a 1/2-inch-by-13-4/5-yard roll of 3M film mounting tape to keep your insulation in place all season long. This double-sided tape seals off cracks and crevices, creates an airtight seal, and establishes a strong bond between the surface, the tape, and the insulation film, as recommended in ENERGY STAR's "Seal and Insulate" guidelines. Featuring a convenient, ready-to-peel liner, the tape adheres easily to a variety of surfaces and stays intact upon removal.

Simple, Fast Installation
Installing the door insulation is easy. You simply unfold the film and cut it to the width of the door frame, allowing an extra inch on all sides. Next, you firmly apply the mounting tape around the frame and remove the paper liner. Then you apply the film to the tape, starting at the top of the door, and reposition and stretch the film to remove wrinkles. Finally, you use a blow dryer to remove any remaining wrinkles, then trim any excess film.

Made in the United States, and designed for indoor use only, this insulator kit can be used with aluminum, vinyl-clad, or painted or varnished wood molding, but it should not be applied to veneer paneling or Lauan mahogany molding. The film and tape should be removed from the door at the end of the season. The film measures 7 square yards, or 7 feet by 9.3 feet by 0.75 thousandths of an inch (H x W x D), and weighs 0.24 pounds.

What's in the Box
Insulation film and one roll of mounting tape.