








🖤 Lock in your screens with style and strength — don’t let bugs crash your vibe!
The ADFORS FSP8521-U is a 0.125 inch diameter, 100-foot long black flexible PVC spline designed to securely hold insect screens in 5/16” x ¾” frame channels. Compatible with a variety of ADFORS screens, it offers easy installation and a sleek finish, making it the go-to choice for professional-quality screen repairs and custom projects.







| ASIN | B00GWU82WK |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 685,713 in DIY & Tools ( See Top 100 in DIY & Tools ) 9 in Window Screen Splines |
| Colour | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (6,828) |
| Date First Available | 20 Sept. 2023 |
| Included Components | Saint-gobain ADFORS Spline, 125 in X 100 ft, Black |
| Item Package Quantity | 1 |
| Item Weight | 249 g |
| Item model number | FSP8521-U |
| Manufacturer | Saint-Gobain ADFORS |
| Material | Flexible PVC |
| Part Number | FCS8521-U |
| Pattern | Spline |
| Product Dimensions | 51.44 x 21.59 x 12.95 cm; 249 g |
| Size | .125 in X 100 ft |
| Style | .125" x 100' |
L**R
One product, lots of uses.
I bought this to strengthen handles of home made bags and it was perfect for that. I’ve not used it for its intended purpose in securing glazing panels in place.
D**.
No issues at all. Strong. Pressed in nicely. Check a YouTube video where a guy uses coins to measure what size you need. I didn't have a mm ruler. I used coins to measure both the screen spline groove and the spline itself. Got it right on the first try. A+
A**R
I screened my deck to keep the bugs away during the summer months and these worked great for my screen tight screening option I had. They move smoothly into grove and don't pop like some others do, therefore I highly recommend them.
C**S
Excelente como complemento de screen resistente a mascotas.
A**B
Fit as it should.
A**K
I used it to replace window screen. Product as described and easy to work with; strong, yet flexible. 100' pack reduces waste since I could cut the exact lenghths I needed
Trustpilot
3 weeks ago
2 weeks ago