The "Ultra Protect" basement window well covers are designed with "Safety" and "Security" for your home and family in mind. These professional grade lightweight basement window well covers are assembled using durable clear polycarbonate plastic riveted to a continuous structural grade aluminum angle rear support. When properly installed using our solid steel "SAF-T Lock" locking system these covers will support a minimum of 250 lbs. This locking system features a pull pin release that quickly unlocks the cover from inside the basement window well without the use of a tool (required by building codes) making for a quick and easy escape in case of emergency. Installing an "Ultra Protect" basement window well cover over your basement window well minimizes the risk of persons falling into deep, uncovered, unprotected basement window wells, preventing possible injury. The model RT665 (66 in. x 26 in.) window well cover is designed for use over typical corrugated steel window wells (also known as "Area Walls"). Its versatility allows it to be installed and trimmed to the profile (plus up to a 1 in. overhang around the perimeter) of any type basement window well (steel, concrete, plastic, brick, timber etc.,) by using an ordinary jigsaw equipped with an aluminum cutting blade (10 to 14 teeth per in. blade for best results) making for a perfect fit window well cover over any type window well. Also see our Egress Escape Ladders typically required by code in this size window well.