BDF S4MB20 Security Window Film – 4 Mil Safety & Daytime Privacy, Black 20 (Dark)

Key Features

• 4 mil security film: Polyester construction adds a protective layer to existing glass and helps hold broken glass fragments together after impact.
• Added glass protection: Helps reduce glass fragmentation from accidental impacts and attempted forced entry.
• Dark black tint: Reduces visible light and glare while providing increased view-shielding compared with lighter security films.
• Enhanced daytime privacy: Dark tint helps reduce visibility from outside during daylight hours while maintaining outward visibility.
• Sun & heat control: Helps reduce solar heat and glare for a more comfortable indoor environment.
• 99% UV rejection: Blocks up to 99% of UV rays, helping reduce UV exposure that can contribute to fading of furniture, flooring, and other interior furnishings.
• Nighttime privacy limitation: Privacy is lighting-dependent and can decrease or reverse at night when interior lighting is brighter than outside.
• Professional adhesive: Strong adhesive system is designed for long-lasting application to compatible glass surfaces.
• Customizable fit: Film can be trimmed to fit a variety of residential and commercial windows.

Product Overview

BDF S4MB20 Security Window Film combines 4 mil safety and security film construction with a dark Black 20 tint, providing added glass protection, daytime privacy, and solar control.

The film is designed to help hold shattered glass fragments together following impact, which can help reduce hazards associated with broken glass. Its 4 mil construction adds a protective layer to existing glass during accidental impacts and attempted forced entry. It should be considered an added protective layer rather than making the window break-in or impact proof.

The Black 20 dark shade provides stronger daytime view-shielding than the lighter S4MB35 and S4MB50 options while maintaining outward visibility. It also helps reduce solar heat and glare and provides up to 99% UV rejection, helping reduce UV exposure that can contribute to fading of interior furnishings.

Daytime privacy is dependent on lighting conditions. The privacy effect is strongest when it is brighter outside than inside. At night, when interior lights are on, visibility from outside can increase, so S4MB20 should not be relied upon for nighttime privacy.