Not all bees swarm. Some, like the Red Masons and Leafcutter bees, are solitary, mild-mannered pollinators. Welcome them to your garden with a home designed especially for them. Stacked trays can be removed for cleaning and inspection. Wood with copper flashing. Screws, nuts, and instructions included. Comes with hook on the back to mount on to garden wall, fence, house or tree. Mount 3-6 feet from the ground (not higher than 7 feet) in warm sunny area. It's helpful to be around sources such as flowers, gardens or orchards. 7"w x 7 ½"h x 6 ½"d.