3M™ Privacy Filter for 21.3in Monitor, 4:3, PF213C3B

Protect sensitive information in public or shared spaces without sacrificing display quality. The 3M PF213C3B Privacy Filter is specifically engineered for 21.3-inch desktop LCD monitors with a 4:3 aspect ratio, delivering dependable privacy while preserving the integrity of your work. This unframed filter slides neatly onto your screen, providing a clean edge-to-edge fit that looks close to a built-in part of your monitor. The PF213C3B uses 3M’s advanced privacy technology to reduce side-angle visibility, helping prevent shoulder surfing in airports, cafes, libraries, and busy offices. When you work on confidential data, emails, financial spreadsheets, or patient records, this privacy filter helps keep your screen content visible only to you, directly in front of the monitor. The unframed design minimizes visual intrusion, maintaining a sleek, professional aesthetic for your workspace. Beyond privacy, the filter also reduces glare and reflections from overhead lighting, delivering a more comfortable viewing experience during long work sessions. It’s a practical, durable choice for professionals who demand privacy without compromising image clarity or color fidelity.

• Enhances privacy on 21.3" monitors with a 4:3 aspect ratio: Micro-louver technology narrows the viewing angle from the sides, so sensitive information stays private from neighbors, passersby, or coworkers while you continue to see your screen clearly when viewed straight on.
• Unframed, low-profile design: The PF213C3B is built to fit seamlessly on desktop LCD displays without adding bulk or a cumbersome frame, preserving your monitor’s original look and your desk space for a polished, distraction-free setup.
• Preserves image quality and color accuracy: The filter maintains crisp text, vibrant colors, and sharp images for the user viewing the screen head-on, so you don’t have to choose privacy over readability or professional presentation quality.
• Glare and reflection reduction: It helps minimize reflections from overhead lights and ambient brightness, reducing eye strain and improving readability in bright offices, libraries, or open workspaces.
• Easy installation and everyday use: Designed for simple attachment to desktop LCDs with included mounting tabs and a straightforward alignment process. It’s durable, easy to clean with microfiber cloth, and readily removable when privacy is no longer needed.

Technical Details of PF213C3B

• Product: 3M PF213C3B Privacy Filter
• Screen size compatibility: 21.3 inches (diagonal)
• Aspect ratio: 4:3
• Framing: Frameless/unframed design for a sleek, minimal look
• Technology: Micro-louver privacy system to limit side-viewing angles
• Mounting method: Simple, removable mounting tabs for easy attachment to desktop LCD monitors
• Filter tint and finish: Neutral gray tint optimized for comfortable viewing without color distortion
• Usage scenario: Ideal for offices, libraries, and public spaces where privacy from shoulder-surfing is important

How to install PF213C3B

• Power off your monitor and clean the screen with a lint-free microfiber cloth to remove dust, oils, and fingerprints; allow the surface to dry before applying the filter.
• Identify the top edge and align the filter with the monitor’s bezel so the edges line up evenly and the 21.3" diagonal matches your display.
• Attach the included mounting tabs or adhesive strips to the filter’s edges, following the package instructions for placement relative to the screen’s corners.
• Gently press along the edges to secure the tabs and ensure there are no air pockets or loose areas; verify the alignment once more before powering on the display.
• Power on the monitor and check the privacy effect from a side angle; if necessary, slightly adjust the filter’s position for optimal privacy and minimal gaps.

Frequently asked questions

• Q: What size and aspect ratio does the PF213C3B support? A: It is designed for a 21.3-inch diagonal monitor with a 4:3 aspect ratio, offering a frameless, unobtrusive fit on compatible displays.
• Q: How does the privacy feature work? A: The PF213C3B uses micro-louvers to limit side viewing angles. When viewed from the side, screen content becomes difficult to read, while the user looking straight on sees normal clarity and brightness.
• Q: Will this privacy filter affect color accuracy or screen clarity? A: When properly installed, the filter preserves text sharpness and color fidelity from the primary viewing angle. Some slight premium filters can alter brightness slightly, but 3M designs these to minimize impact while maintaining privacy.
• Q: Is the PF213C3B easy to install and remove? A: Yes. The filter is designed for straightforward attachment with included mounting tabs. It can be removed and reattached as needed without leaving residue or damaging the screen, provided instructions are followed and tabs are used as intended.
• Q: Can the PF213C3B help reduce glare? A: Yes, the privacy filter also contributes to glare reduction by limiting reflections from ambient lighting, making it easier to read in bright environments and helping reduce eye strain during long work sessions.