All the window Alert Decals come 4 Per Pack.
There should be 1 decal for every square meter or 3 square feet.
It is a static cling decal that may be applied to home and office windows.
Decal has a component that reflects ultraviolet sunlight that glows like a stoplight for birds
They are to be used only on the exterior of the clean glass surface.

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 6 inch
Height : 0.12 inch
Length : 9.75 inch

Item Weight: 0.96 ounce (View shipping rates and policies)
Shipping Weight: 2.4 ounce (View shipping rates and policies)

ASIN : B0096UUSPC

Product Description

Leaf Medley Multi pack of 5 leaf decals. One Elm, Oak, Maple and 2 Aspen leaves included. Window Alert 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.