The Swift Box No. 17A is made from a special mixture of compressed plant fibres and concrete which enables it to provide good insulation and an extremely long life. This is an extended version of the No. 17 Standard Swift Box and can accommodate three pairs of swifts in parallel. This assists in the rapid formation of swift colonies. The box is supplied in a natural grey colour but can be painted to match the background using an air-permeable paint.
This box should be installed at least six to seven metres above the ground, ensuring that there is unobstructed access for birds entering and leaving. If possible, boxes should be sites under the shelter of eaves or overhanging roofs. They can also be installed on steep rock faces. The box can be opened by rotating the circular plate containing the entrance hole by 90° and removing it. Cleaning can then be performed although, in boxes which are occupied by swifts, this is not essential.
The 17A Swift Box is supplied with two L-shaped fixing brackets and screws.
* Material: Plant fibre and wood-concrete (100% asbestos-free)
* Internal dimensions: 14 x 14 x 30cm
* External dimensions: 15 x 15 x 98cm
* Weight: 7.1kg