Made with premium cedar; naturally insect and rot resistant. Treated with a water-based, protective stain. Attracts bluebirds and tree swallows. Stay-clear, crack-resistant viewing windows allow viewing while protecting the young. Air vents allow maximum air ventilation through wall and floor openings. Clean-out doors provide easy access for cleaning. Elevated mesh floor aids in the management of blowfly; crafted from durable, rust-free galvanized wire mesh. Predator guard extends the entrance hole to protect young birds against predators. An addition of fledgling skerfs provide extra grip for fledglings to climb out. Can be installed with a pole mount or flush mount. All included hardware is rust-free and covered by a 3 year manufacturer’s warranty.