Not only does this vacuum have amazing suction power, it's also as wide as a ladder! I am assuming this was specifically designed to fit perfectly on the stairs. I don't remember anything in the description or reviews to indicate this, so I was pleasantly surprised. I've had sooooo many vacuums over the years. The only vacuum I liked more was my $1200 Rainbow. I'm also glad I took the risk of making the refurbished choice. It's like a new vacuum for a great price. I have no complaints.