The box has a fixed roof, floor and sides and an open front. The thicker walls provide better insulation and weather resistance whilst the overhanging roof sheds rain effectively ensuring the inhabitants stay dry. Any water that does get in the box can escape through the drainage holes in the base of the box.This nest box is constructed from precision cut European softwood and has been treated with an environmentally friendly preservative which is kind to the birds but helps ensure a long lasting dry and comfortable nest box. Fixing to the wall or tree is easy with a concealed hole in the back of box (easily accessible to a screwdriver). Features: Designed to provide a comfortable home for robins and other birds such as flycatchers, wagtails and wrens that prefer an open fronted nest box.Constructed from sustainably sourced, precision cut, redwood panels.Handmade in our UK workshop.Finish: Non-toxic water-based stain andpreservative.Entrance: Open front to the box to suitspecies that prefer to nest in boxeswith larger entrances includingrobins, wrens, flycatchers, redstartsand wagtails.Position: Open fronted boxes are morevulnerable to predators so ideallyposition to minimize accessibility orconceal box within or behindfoliage.Material: European SoftwoodFixing Single hole in back panel.Installation: Can be mounted on walls, trees,fences etc. Single mounting holebehind entrance to provide accessfor a screwdriver.Dimensions & Weight: Dimension: Overall Depth: 16.5 cmOverall Width: 20 cm Overall Height: 23.5 cmWeight: 1.4 kg.