This attic door insulator is a must for your house. Made of polyethylene bubbles and premium aluminum the attic stairway cover has great waterproof and fire-resistant function. With 14.5 R-Value this attic stairway insulator will have good insulation performance for your house. And the attic door insulating cover will keep your home cool in the summer and warm in the winter to save heating and cooling costs. You don't need to assemble this attic insulation cover after receiving it. Just fix it over the attic door opening and staple the cover on the frame of the door. (Note: Stapler not included) If you are looking for a attic door insulator like this don't hesitate to buy it! --Premium aluminum and bubbles ensures durableness --Great waterproof and fire-resistant function --14.5 R-Value is good for insulation performance --Double smooth zipper for access attic conveniently --Saving heating and cooling costs in winter or summer --Tight stitching of reinforced trimmed edges --To prevent dust or pollutants leakage efficiently --Just fix cover over attic door opening and staple it