Hello and thank you for your inquiry, this playard is meant to be used as either a 4-panel, 6-panel or an 8-panel free standing playard. The panels when removed come off two at a time, the removal of just one piece can compromise the safety and stability of the product.
No, two of the play yards cannot be combined to make a larger play yard.
There are 6 panels, each about 34 inches in length.