Energy Efficiency: Made from double-bubble reflective radiant material, this attic cover insulator is designed for year-round energy savings. It effectively reflects heat, keeping your home warmer in winter and cooler in summer by reducing heat transfer, which can lower energy costs Convenient Opening & Closing Design: The attic cover is equipped with high-strength zippers, which have a long service life and facilitate frequent opening and closing. Every time you enter the attic, just open the zippers and fold the cover over, you can easily enter and exit, making the operation simple Prevents Air Leakage: By forming an air-tight barrier, Eapele attic insulation cover prevents unwanted air from leaking in and out, helping you maintain indoor temperature. It keeps dust and pollutants from entering your home, resulting in a cleaner environment and better indoor air quality Quick Installation: Installation is straightforward and fast—usually under five minutes. Attic door cover fits inside the staircase frame, just stapling along the black seam binding. Important Sizing Note: Be sure to measure the attic opening accurately, including internal and external dimensions and height, to ensure proper fit. The attic hatch cover's external size is 54.72" x 25.59" x 11.02", while the internal size is 53.94" x 25.59" x 10.63" Eapele Attic Stairs Insulation Cover Tent Premium Energy Saving, 25”x54”x11” for Pull Down Stairs, Double Bubble Reflective Radiant Barrier Reflects 95% of Radiant Heat(2 PCS)