Browse our range of bird box protective stainless-steel plates. Designed and manufactured by a highly respected and well-known brand with years of expertise. These bird box protective stainless-steel plates are designed to provide a secure seal around the entrance of the bird box. These plates are now available with entrance holes 25mm, 28mm, and 32mm in diameter, meaning you can choose which type and species of birds to use your bird box. Your bird box, and the feathered visitors inside will be well fortified by these plates that prevent predators, such as woodpeckers, from gaining entrance and harming the nesting birds.