A scaleable birdhouse with built in mounting bracket.Easy install with pre-punched holes for fastening. Vented floor for waste and air movement.Vented roof eave's that keep water out of nest.Holes at entrance for perch. (wooden dowels can be glued)Sandable, paintable surface. Roof slate texture.Rainguard over entrence to shed water away. This birdhouse actually attracts birds! Despite what users on the internet are saying about 3d printed birdhouses this one is mounted on my garage right now with sparrows living inside. They built their nest within a week of putting it outside.