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Butterfly Decal Envelope
WindowAlert decals help prevent wild birds from accidently 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.
CONTENTS: 4 Decals per Envelope. TYPE: Static cling.
(If you have a bird that repeatedly attacks your windows, please consider our CardinalAlert product.)
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.
CONTENTS: 4 Decals per Envelope. TYPE: Static cling.
(If you have a bird that repeatedly attacks your windows, please consider our CardinalAlert product.)
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