|This is a cockatiel nest box and is made of pine exterior plywood. We use a A-B Grade plywood, so there are never any knots showing. Nest box measures approximately 10" x 11 1/2" x 14" with and entrance hole of 3" and the top is removable, just held in place by 2 screws. Glued, screwed, and nailed together, this nest box will give you years and years of enjoyment. Comes to you fully assembled. Shipping is FREE on this particular nest box and the price is just $29.99!!