The only stair cover to meet the new MA State Building Codes! Section 6106.2.5 Access Openings: "Access doors, hatches, scuttles, pull down staircases and similar constructions that are part of the building envelope shall be insulated to a level equivalent to the insulation of the surrounding floor, wall and ceiling."By reducing the amount of heat and moisture leaking into your attic, the severity of ice dams and attic mold is greatly reduced!R-50 Kit included. Installs in muinutes - no tools needed. 2 sizes to fit the most common size attic stairs (22x54 and 25x54) - pays for itself in months!