DIFFRACTION GRATING FILM
PICK YOUR SIZE
**PLEASE PAY CLOSE ATTENTION TO SIZES...ALL SIZES ARE IN INCHES**
13,500 lines/inch Double-Axis Diffraction for the BEST RAINBOWS!
Makes great rainbows if placed in windows with DIRECT SUNLIGHT passing through!
Film can easily be cut with household scissors for placement in various windows, but size should be no smaller than 6" x 6" for the best rainbow effects.
Film has no adhesive, but most people are using small pieces of clear tape to attach the material to their windows.
This is the same material used as lenses in fireworks glasses!
Thanks for Looking!