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WindowAlert decals help prevent wild birds from accidentally striking windows. Each decal has a special coating that reflects ultraviolet sunlight. This ultraviolet light is invisible to humans, but birds see it as a brilliant glow - much like a stoplight.

To the human eye, the decals appear as frosted or etched glass. The decals measure approximately 4" across, and are designed to be placed on the OUTSIDE of a window. As a rough guide, we recommend one decal for every 3" x 3" section of glass.

MADE IN THE USA!

Contents: 4 decals per envelope Type: Low-Tack


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