|Screen Size||12 inches|
3M Privacy Filter for Laptop 12.1" (PF121C3B)
|Price:||$13.95 + $4.99 shipping|
- Enter your model number to make sure this fits.
- Keeps your personal or confidential information safe from prying eyes
- You'll see the information on your display while people on either side only see a darkened screen
- Designed to fit standard laptops with a diagonally measured 12 3/16" viewing screen and a 4:3 aspect ratio
- Actual filter dimensions are 9 3/4" wide x 7 5/16" high (247 mm x 186 mm)
- Includes your choice of two easy-to-use attachment methods
- Reversible, matte side reduces glare and reflections
- Lightweight, thin, frameless design
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From the Manufacturer
From the Manufacturer
3M Privacy Products
Featuring microlouver technology pioneered, designed and optimized by 3M to 'black out' side views so you see your screen clearly while visual hackers are left in the dark.
Privacy is the best policy.
These days, screens are everywhere. And so are visual hackers. With the increase of mobile workers, open workspaces, and the migration of data to the cloud, screens can display private information virtually anywhere.
An unprotected screen can expose sensitive and private information, trade secrets and business plans. And the reality is that a visual hacker may only need one piece of valuable information to unlock a large-scale data breach.
A leader in screen privacy and protection
For more than 30 years, 3M has been advancing optical technology to deliver market-leading visual privacy and protection products. We remain a trusted global leader today — continuing to improve our technology, features, and breadth of product.
Display and device technology continues to advance. So do we. Our privacy and protection products work simply and beautifully on most of today’s devices to help protect your screens, and help keep the information on them private.
Behind the simplicity of our products is a powerful combination of optical science and sheer ingenuity you’ve come to expect from 3M. Rest assured, our products are inspected for quality defects, ensuring that you get authentic, 3M branded product, with science applied to life.
Visual hacking: when information is visually captured without permission. But we’ve got you covered.
Protect your data in public
With an increasingly mobile workforce, it is essential that companies and employees take extra precautions before exposing company information on their device screens in public.
How privacy filters work
3M Privacy Filters block side views outside the 60 degree viewing angle, while providing a crisp, clear view to those directly in front of the screen.
A single microlouver is about as thin as a single strand of hair. There are thousands of microlouvers within one 3M Privacy Filter—all virtually undetectable by the human eye.
3M Privacy Filters for Laptops attach with optically clear adhesive strips or easily removable slide mount tabs.
Find the right privacy filter for your screen.
Step 1: Determine your screen type
Does your device have a raised bezel or a flat front glass screen?
Raised Bezel: screen with a raised frame.
Flat Front Glass: edge-to-edge glass screen without a raised frame.
Step 2: Measure your screen
For a raised bezel screen, measure the height (h) and width (w) of the screen’s viewable area within the bezel.
For a flat front glass screen, measure the height (h) and width (w) of the entire glass display.
Step 3: Find your filter
Use the measurements to select the right sized filter for your device from the products listed below.
Best fit tip: if you don’t see a filter that matches your measurements select a filter that is smaller, yet closest to your measurements.
Top Customer Reviews
There are some disadvantages with this screen though. Your seatmate directly next to you will be able to see through the filter to your screen partially, because they are within the viewing angle of the screen with the filter on. But move over any farther and the screen is not visible, nor is it visible across the aisle (if sitting in an aisle seat). About the only other place that it is visible is if someone is standing directly above you, one row back. Turning down the brightness of your screen also helps immensely in blocking people from viewing your screen through the filter at any angle.
(Please note, having this filter installed screens out about half of the light coming out of the screen. If you have poor eyesight with dim lighting and have trouble with computer screens, this product may not be for you.)
Additionally, the clear plastic tabs included with the filter adheres to the plastic border around the notebook LCD screen to keep the filter in place. It works, but blocks about a 1/8" of the screen at 6 points, especially noticeable around the bottom of the screen where the start bar is located.
You'll also notice a large "3M PF14.1W" printed in the top right hand corner of the filter. It's used to help in determining whether the filter is facing the right direction, but it's quite distracting at times.Read more ›
The image clarity of the 3M filter was significantly better (note that I work with small fonts, spreadsheets, etc. and wear glasses) Yes, ViewGuard, I removed the protective film before making the comparison! Two things bugged me about the ViewGuard: (1) its polarization cuts run diagonally (the 3M run vertically), which is distracting, and (2) the image through the ViewGuard is a tiny bit blurry/hazy compared to the 3M. 3M seems to have a more clear film that they use. A colleague of mine did the same side-by-side and agreed with me.
Both products do what they claim, and both fit my notebook well, although I also prefer the optional vertical mounting strips that come with the 3M product (both come with mounting 'dots', but 3M supplies an alternate mounting mechanism as well).
Let's face it: $50 for a piece of plastic seems expensive, but there's no alternative if you want to work on client (or your own financial) information on a plane. Thanks, 3M, for making a quality product. (And no, I don't work for 3M!)
First, the one positive note -- the privacy filter works fairly well, as people seated to the side of the screen will not be able to see what is on your screen. However, the filter does not sit flush against the screen, so the image the user sees is a bit warped. It's also going to add a lot of glare / reflection to your screen.
Second, the glare reduction -- this is a joke! There is noticeably more glare on the screen when this filter is attached. I see my own reflection about as well as looking in a mirror... except worse (because of the non-flat fit, the image is warped).
Additionally, the screen is quite a bit darker when the filter is attached.
Overall, the screen may provide some privacy protection, so if that is all you need, this could work... however, you will have to learn to deal with increased glare, a darker screen, and the warped distracting glare / reflection.
Most Recent Customer Reviews
Pretty much as advertised. Fits laptop exactly, quoted size is accurate with what you get. Two choices of mounting - I went with the tabs on the lap top bezel, rather than double... Read morePublished 2 hours ago by Amazon Customer
Only works well from certain angles and usage instructions aren't great. I still use it every day but it's not very good. Read morePublished 15 hours ago by Maximus
I was a consultant who traveled weekly. Lots of time on flights makes a privacy filter important to me. Read morePublished 1 day ago by F Lee
It works and looks great but my laptop is a 14 inch screen and it didn't cover all the screen, almost half an inch each side of the screen is not covered by this.Published 2 days ago by Luis Herrera
The item was received and not opened for 2 months as the employee had not arrived from China. When opened we realized the screen in the package was not the item ordered! Read morePublished 4 days ago by Judy