The box is installed by removing the sloping front, 2 screws through the back into the wall, then replace the front.
The end result looks rather good and in keeping with the building. The Suffolk Wildlife Trust has done a great job. AND Swifts have already been seen over the lake - on 5th April!
More pictures and design drawings:
|click for larger pictures|
|Actual dimensions will depend on the angle of the roof slope|