18 x 24 x 0.04 Inch Acrylic See-Through Mirror, Scratch Resistant, 40% Transparent

This is an 18 inch x 24 inch x 0.04 inch, scratch resistant see-through acrylic mirror. It can be used to make a smart mirror, an infinity mirror, for surveillance, for theatrical applications, or whatever else you can think of. This kind of mirror is also known as a two-way mirror or sometimes as a one-way mirror. It is made of acrylic which is naturally shatter resistant, making a safer alternative to glass.FAQ:1. What is a two-way mirror?A two-way mirror is coated with a thin, almost-transparent layer of metal. The result is a mirrored surface that reflects some light and is penetrated by the rest. Light always passes equally in both directions. However, when one side is brightly lit and the other is dark, the darker side becomes difficult to see from the brightly lit side because it is masked by the brighter reflection of the lit side.2. How do you clean it safely? (SR)The reflective side doesn't have a protective coating, so avoid wiping it with anything if possible. To decrease the need to clean the reflective side, face the non-reflective side outward. The non-reflective side has protective coating and can handle some wear and tear.Cleaning suggestions for the non-reflective side:Use a completely clean microfiber cloth together with Zeiss 50% isopropyl alcohol. Or, if you are able to, an even better option is Novus 1 Plastic Clean & Shine together with Novus Polish Mates or Kimwipes (all of which you can get on Amazon).3. How do you cut it?The acrylic can be cut, but be careful not to damage it. I recommend leaving the protective covering on the mirror until you finish cutting and even then you may still damage the mirror in the process. You can use a plexiglass cutting tool, a razor blade, a dremmel, or a laser cutter. For a plexiglass cutting tool or a razor blade, use a straight edge and do 6-10 passes cutting all the way to the edge of the acrylic.

• 18 inch x 24 inch x 0.04 inch see-through acrylic (approximately 40% transparent). Can be used for a smart mirror, surveillance, or theatrical application. Shatter resistant, unlike glass. Slightly bendable.
• A two-way mirror is coated with a thin, almost-transparent layer of metal. The result is a mirrored surface that reflects some light and is penetrated by the rest. Light always passes equally in both directions. However, when one side is brightly lit and the other is dark, the darker side becomes difficult to see from the brightly lit side because it is masked by the brighter reflection of the lit side.
• 2nd photo monitor off. 3rd photo monitor on, bright room. 4th photo monitor on, dark room. 5th photo reflection of ceiling light. 6th photo ceiling light seen through mirror. 7th photo demonstrates nature of two way mirror.
• Be sure to remove thin protective film from both sides before use. Side with blue protective covering may have a 2nd clear protective covering underneath. Protection may be scratched, but underlying mirror should be unscratched. Blue covering is on reflective side, clear covering is on back of mirror.
• The scratch resistant version has a coating that protects the non-reflective side of the mirror. The side with this scratch resistant coating should hold up to some wear and tear. Be sure to face the non-reflective side in the direction that receives the most wear. The side with reflective coating can be damaged easily, so avoid wiping it with anything if you can.
• Please see FAQ in description area below for more useful info.