Window Alert - Bird Strike Prevention S&K System includes a sturdy 2"

System includes a sturdy 2" square (or 3" square upgrade)

Dimensions are 22"Dia x 7

Its name says it all: "The Best Purple Martin House"

And cleanup's a cinch

Window Alert - Bird Strike Prevention S&K System includes a sturdy 2"Millions of birds die each year when they fly into windows. Help slow down this loss of life by using these high tech decals. WindowAlert decals can be used on any window in your home or business. Every decal creates a brilliant reflection of ultra violet sunlight that the birds can see. The ultraviolet light however is 100% invisible to the human eye while glowing for wild birds. These decals help our feathered friends see the windows before hitting