Protects nests and chicks: Heavyduty metal entrance guards reinforce the hole on wooden birdhouses and DIY shelters so squirrels, larger birds, cats and wasps cannot enlarge or occupy the entrance. Keeps nesting birds safer and reduces nest loss. Durable, weatherresistant construction: Made from thickened metal plates that stand up to rain, sun and outdoor wear for longterm protection without frequent replacement. Easy, fast installation: Each guard has predrilled screw holes for quick setup. Align the plate over the entrance, hold or clamp in place, then secure with the included screws — installation takes only a few minutes. Universal fit and lowvisibility design: Each plate measures 5.08 cm x 5.08 cm (2.00 in x 2.00 in), a compact size that fits most standard wooden birdhouse entries and blends with surroundings rather than calling attention. Complete hardware included: Each package contains four metal protection plates and sixteen screws, enough to install guards on multiple boxes or to secure each plate firmly. Practical benefits at a glance: Prevents predators and pests from enlarging or taking over nest entrances Extends the service life of wooden birdhouses by protecting worn entry edges Simple retrofit for existing birdhouses and DIY projects Use scenarios: Home garden birdhouses: Reinforce the entrance on your backyard nest boxes to protect songbirds and fledglings from raccoons, squirrels and larger birds. Community or school projects: Add durable entrance guards to DIY bird shelters used in classrooms, parks or conservation projects to reduce maintenance and protect young birds. Orchard and farm nesting boxes: Install on nest boxes in orchards or on small farms to deter pests and wasps that can disturb nesting birds. What's in the box: 4 protection plates (5.08 cm x 5.08 cm / 2.00 in x 2.00 in) 16 screws for secure mounting Compatibility and care: Designed for most wooden birdhouses and DIY wooden shelters Install on dry, clean surfaces for adhesion of screws; check periodically to ensure screws remain tight Reliable, simple protection for nesting birds without altering the look or function of your birdhouses.