The Value Line pet steps are less expensive alternative to our regular steps line. These steps have the same dimensions as our other stairs. The difference is the materials used in their construction. They are made of OSB (Orientated Strand Board) instead of plywood. The use of OSB in no way decreases the strength of the steps as the OSB is 7/16" thick compared to 3/8" for the plywood we use. Value Line stairs are covered with a less expensive needle punch carpet (similar to auto carpet) in beige and black ONLY. Because needle-punch carpet is not as thick as the carpet we normally use the screws that hold the sides on are much more visible, but is not a defect. Our value line pet steps stairs are 12" wide and intended for small pets. They are available in 3, 4 and 5 step models with heights of 16", 21" and 26". These steps will help your pets reach their favorite places. As a guide we suggest these pet ramp stairs are suitable for pets up to 21 lbs.