That"s right, minutes! This great unfinished wooden birdhouse assembles right out of the box with no nails or glue! In fact other then a couple of minutes, nothing else is required for assembly. Because of this, it is a fantastic family project and like all of Greenleaf"s products, it is made in the USA. It"s great for Blue Birds, Cardinals and other large birds. Features include: Assembles in minutes No glue or nails needed for assembly Tab/slot assembly Unfinished wood Made in USA Assembled Birdhouse Dimensions: 11" W x 11" D x 9" H