Check out this project on RYOBI Nation - Needed a baby gate for the top of our basement stairs. I took out the existing basement door, and placed a 29" by 36" wooden baby gate. Made from 1x4 common boards, sanded it down, stained it Golden Oak, screwed it together with 1.25" wood screws, used a gate latch also.
Trixie Convertible Wooden Dog Gate & Play Pen Extension (As Is Item)
Trixie Convertible Wooden Dog Gate & Play Pen Extension
Fences and Exercise Pens 20748: Four Paws 5 Panel Free Standing Walk Over Wooden Dog Gate, 48-110W By 17 H BUY IT NOW ONLY: $61.38