Pack of 5-1Ft x 6" Diffraction Grating Roll Sheet Double Axis 13,500 l/inch - 5 Separate Sheets

I bought this after it was recommended by an acquaintance. My wife loves rainbows and these Diffraction Grating Sheets can be put in a window so the sunshine creates rainbow light spots in her work studio. These are plastic sheets that stick in your window. Get them wet and use a squeegee or something else to stick it to the window. Now when sunshines through the grid, it will be. defracted into a rainbow.

I purchased these diffraction films to use as prisms to cast giant rainbows on my wall, they worked perfectly for that purpose!

Item came rolled, no finger prints, not crinkled, in perfect condition! Thank u!

I cut and placed two layers in a pair of safety goggles for health class, making them similar to "drunk" goggles. Worked well, fingerprints are easily made handling these.

My students loved making rainbow "spy" glasses with this stuff.

Each sheet is full of nicks, it's not protected when they ship it. So it's useless when it arrives. Very disappointing

Exactly as described

Item was shipped in a thin baggy 5 sheets flat with no cardboard protection. Dents in each sheets I guess either from other items in box or just from the manufacturer. Sheets are thin so dent easily.