This bluebird house has been made from high-quality materials salvage from a 1860s Pennsylvania Dutch bank barn from Berks county Pennsylvania. The box has been made from thick 1 inch hemlock along with high-quality exterior screws an antique water valve handle and a 1970s Colorado license plate. the box has a side access with a screw that can be removed to clean the box out yearly and will include a screw mounting as well. The bluebird box has had three coatings of boiled seeded oil and a finishing coat of beeswax, Norway, spruce treeresin and boiling seed oil mix. All of our boxes are made to last many years and are made for the serious bird lover and if you have any questions or comments feel free to message me and I will get back to you. Thank you.