





🖤 Lock in your view with the ultimate screen spline upgrade!
Saint-Gobain ADFORS Spline is a 0.125 inch diameter, 100-foot long flexible PVC spline designed to securely hold insect screens in standard window and door frame channels. Compatible with all ADFORS screen types, its durable black finish and easy-to-install design make it the go-to choice for professional-quality screening projects.







| ASIN | B00GWU82WK |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #37,987 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #18 in Window Screens |
| Brand | ADFORS |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (9,832) |
| Date First Available | June 3, 2025 |
| Global Trade Identification Number | 00011646701756 |
| Included Components | Saint-gobain ADFORS Spline, 125 in X 100 ft, Black |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 8.8 ounces |
| Item model number | FSP8521-U |
| Manufacturer | Saint-Gobain ADFORS |
| Material | Flexible PVC |
| No. of wires | 1 |
| Number of Cable Strands | 1 |
| Part Number | FCS8521-U |
| Pattern | Spline |
| Product Dimensions | 20.25 x 8.5 x 5.1 inches |
| Size | .125 in X 100 ft |
| Style | .125" x 100' |
| UPC | 011646701756 |
D**.
Very good.... works as claimed
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**B
Worked great
Fit as it should.
J**.
Was enough
Was enough to do all the windows. Good quality.
K**N
Does the job
The spine was a good fit and layed in well. The screen was very difficult to work with and I returned it ,but this product seems durable and did its job. Ive got no screen but I’m prepared with screen spine should I need it.
M**T
Great spline!
This spline is strong and easy to use. It is the perfect thickness to replace screens on windows. It is a great value and looks great!
J**Y
Perfect for residential screen replacement
Perfect
C**R
Quality product
Fit aluminum frame groove well and keep the screen tight after years of installing
K**D
Good Value
Looks great, but very hard to install. The spline needs to be deeper.
U**A
Got this spline to install a "pet defense" screen on a patio door. The plastic screen is thicker but this spline worked perfectly.
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.
C**H
It's a great idea to pack three different sizes, really useful for people like me who have no idea what size they need.
B**Y
There are virtually NO splines. There is a "slight" marking where a spline could be. The product is, for the most part, totally round. I have purchased a "spline" product from this manufacture previously. This is NOTHING like the original spline product. Will be returning!
Trustpilot
4 days ago
3 days ago