019 Fire Red Gel Filter Sheet 10" x 10"

Put in front of your screens to create an extra dim "night mode". Will let red light through and attenuate the blue end of the spectrum, which tricks your brain into thinking it is daylight. Fold and cut into a pouch for a smart phone, or tape it in front of the blue displays on appliances.I picked this specific color at random, there are other red-colored gels that could work too.

Great color and transparency. Used for costuming purposes.

For its intended purpose, the product was fantastic. I RV a lot, but the interior lights are just too bright at night, I used this product to create a red filter for reduced brightness at night and it worked perfectly, however, only a few months of use the the filter is already fading and is loosing the dimming effect.

Works great for covering lights at night to induce sleepiness. It bends without snapping or cracking. It cuts easily with ordinary paper scissors.

After one week in a led light. turned orange not happy.

Worked great perfect size

just as expected

Good