✔️ EASY-ACCESS 2-ZIPPER DESIGN … The new and upgraded 2-zipper design on our 25" x 54" x 11" attic stair cover lets you zip and unzip more easily than ever for effortless attic access. ✔️ R15.5 INSULATION RATING … Enjoy effective home insulation thanks to the R15.5 rating of this attic cover insulator. Features an operating temperature of 104-176°F. ✔️ SPECIAL ALUMINUM MATERIAL … Our attic door cover is made of a metallized aluminum known as MPET, specially chosen for its superior insulating qualities. ✔️ KEEPS YOUR HOME WARM IN WINTER … Don’t let the heat escape and enjoy a warmer, cosier home in the winter months with this 97% reflective attic stair insulation. ✔️ KEEPS YOUR HOME COOL IN SUMMER … Stay cool in those sweltering summer months by keeping the chilled air inside with our attic door insulation. Insulate your home effectively with this Direct Fits Attic Stair Cover, designed to retain cool or warm air in your living space. Made with a special aluminum material called MPET, this R15.5 insulation rated cover ensures an operating temperature of 104-176°F, providing optimal thermal insulation. The 25" x 54" x 11" attic cover insulator features a convenient 2-zipper design, allowing for easy access to your attic while maintaining its insulating properties. This attic stair insulation, available in a 54" x 54" x 11" size, is perfect for keeping your home warm in the winter and cool in the summer, as it reflects 97% of the heat trying to escape. The product is 11 inches thick, 54 inches wide, and 54 inches long, and it comes in a single piece. Trust Direct Fits for your attic door insulation needs, and enjoy a more energy-efficient home.