Our nest boxes are easy to fit. Simply secure them externally to the building in a quiet spot ideally high up (we suggest at least 5m high) beneath the eaves. It’s important that there is a substantial clear drop beneath the front of the box so the swifts have an uninterrupted flight path.The box is constructed from precision cut external grade plywood and has been treated with environmentally friendly preservative which is kind to the birds but ensures a long lasting dry comfortable nest box. The Swift Nest Box features a single nesting compartment with oval entrance hole and removable side for access.If the nest box is just occupied by swifts you'll not need to clean out the box however if other species use the box (sparrows and starlings will sometimes nest in swift boxes) then its best to remove all the nesting material in the winter when its not occupied and before swifts return in the spring.Features:Bird box designed especially for swifts.Redesigned in 2016, based on the highly successful Zeist design.Ideally placed high up under the eaves on buildings.Single compartment nesting area accessed through an oval entrance hole in overhanging front panel.Modified in 2017 to a 28mm x 65mm entrance as a result of recent research findings.Designed to keep starlings and sparrows from occupying the box.Constructed from precision cut exterior grade plywood panels treated with water based environmentally friendly preservative.Specifications:Material: Exterior Grade PlywoodConstruction: Panels stapled together with surface sunk staples.Finish: Non-toxic water based stain and preservativeFixing: Six mounting holes at sides of the box.Dimensions and WeightDimensions: Overall height: 21cm, Overall width: 43cm, Overall Depth: 21cm2.8kg