How to install transparent window film?

First, clean the glass surface, then generously spray water on both sides of the glass and the film. Then, peel off the backing paper and apply the film to the glass, removing any air bubbles with a squeegee.

What tools are needed to install transparent window film?

For example, a scraper to remove air bubbles, a craft knife for precise cutting, a ruler for exact measurements, and a clean cloth to wipe the surface (some of these tools must be prepared by you).

The transparent window film doesn't adhere well to the windows. Do you have any recommendations?

If the privacy window film doesn't adhere well to the window, be sure to carefully remove any dust or residue from the surface. Adding a little soapy water may make installation easier.

Why does the edge of window film curl? How do I deal with warped window film?

The cause is insufficient adhesion or improper installation. Reapply the film to remove any air bubbles. Or use a hair dryer to heat the curled area to ensure it adheres firmly.

Why isn't the film sticking properly and is it falling off?

The transparent protective film hasn't been removed. Remove it for proper adhesion. If you removed the protective side, you may have applied the wrong side. Apply the smooth side to the window.

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Qualsen Window Security Film Premium 4 Mil Tempered Glass Window Film for Supermarket, Display Cabinet, Home, Office 11.8 x 78.7 inch (Clear)

Qualsen Window Security Film Premium 4 Mil Tempered Glass Window Film for Supermarket, Display Cabinet, Home, Office 11.8 x 78.7 inch (Clear)

Product ID: 790099979

Details

Material
Polyethylene
Brand
Qualsen
Color
4milfbm
Size
Product Dimensions
0.1"L x 0.1"W
Installation Type
Peel and Stick

🏢Versatile for home & business

🔧Peel & stick easy install

🛡️4mil shatter-resistant layer

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867662₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Material
Polyethylene
Brand
Qualsen
Color
4milfbm

Description

🛡️ Secure your space in style — safety that’s crystal clear!

FORTIFY YOUR WINDOWS - 4mil thickness boosts glass strength, deterring break-ins and enhancing safety.
RESIDUE FREE REMOVAL - Smart adhesive peels off cleanly, letting you upgrade or relocate without hassle.
MULTI USE MASTERPIECE - Perfect for homes, offices, storefronts, and display cases—security without compromise.
CRYSTAL CLEAR PROTECTION - Maintains natural light and visibility while adding a discreet security layer.
EFFORTLESS DIY INSTALLATION - Peel, stick, and smooth with included tools for a flawless, bubble-free finish.

Qualsen’s Premium 4 Mil Window Security Film offers a durable, shatter-resistant PET layer that reinforces glass surfaces to prevent break-ins and reduce injury risks. Measuring 35.2 x 78.7 inches, this clear film is easy to install with a peel-and-stick design and includes a complete kit for a smooth, bubble-free application. Ideal for residential and commercial use, it preserves natural light while enhancing security and can be removed cleanly without residue.

Specifications

ASIN	B0F84293DF
Best Sellers Rank	#143,597 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #190 in Window Films
Brand	Qualsen
Brand Name	Qualsen
Color	Clear-4mil
Customer Reviews	4.3 out of 5 stars 4,603 Reviews
Installation Type	Peel and Stick
Item Dimensions L x W	0.1"L x 0.1"W
Manufacturer	Qualsen
Material	Polyethylene Terephthalate (PET)
Material Type	Polyethylene Terephthalate (PET)
Number of Items	1
Product Dimensions	0.1"L x 0.1"W
Size	11.8x78.7inch/30x200cm
Ultraviolet Light Protection	no

Reviews

A**.

22.01.2025

P**T

9.04.2025

D**Y

15.04.2026

J**S

21.10.2024

J**.

8.02.2026

A**E

24.11.2025

H**R

7.06.2022

E**A

6.02.2026

N**N

12.08.2024

L**.

8.12.2024

G**A

27.07.2025

N**Y

22.11.2024

R**A

6.03.2026

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