The Versa Rail makes going up into the attic as well as down and out much safer and easier as well. The Versa Rail is adjustable to fit most Attic Ladder openings. It telescopes down to a minimum width of 22 1/2" out to 30" or the length can be adjusted down to 54" out to 60". Once adjusted to the correct width and length, just fasten it to your attic decking with the proper lag screws provided.