---
product_id: 279505822
title: "FSP8521-U 100' Spline, .125 in X 100 ft, Black, Foot"
brand: "saint-gobain adfors"
price: "€ 58.68"
currency: EUR
in_stock: true
reviews_count: 5
category: "Saint Gobain Adfors"
url: https://www.desertcart.hr/products/279505822-fsp8521-u-100-spline-125-in-x-100-ft-black
store_origin: HR
region: Croatia
---

# 100 ft continuous length Sleek black flexible PVC FSP8521-U 100' Spline, .125 in X 100 ft, Black, Foot

**Brand:** saint-gobain adfors
**Price:** € 58.68
**Availability:** ✅ In Stock

## Summary

> 🛠️ Lock in your view with precision and style!

## Quick Answers

- **What is this?** FSP8521-U 100' Spline, .125 in X 100 ft, Black, Foot by saint-gobain adfors
- **How much does it cost?** € 58.68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/279505822-fsp8521-u-100-spline-125-in-x-100-ft-black)

## Best For

- saint-gobain adfors enthusiasts

## Why This Product

- Trusted saint-gobain adfors brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Long-Lasting Supply:** 100 feet of durable spline means fewer trips to the store and more uninterrupted projects.
- • **Effortless Installation:** Flexible PVC material makes securing screens into frame channels quick and hassle-free.
- • **Universal Compatibility:** Works seamlessly with ADFORS Pet Polyester, Solar, and Aluminum screens in 5/16” x ¾” frames.
- • **Trusted by Pros & DIYers:** Top-rated spline (#3 in Window Screen Splines) with 4.6 stars from over 9,500 reviews.
- • **Precision Fit, Every Time:** 0.125 inch thickness ensures a snug, professional-grade seal for all screen types.

## Overview

The Saint-Gobain ADFORS FSP8521-U spline is a 0.125 inch thick, 100-foot long black flexible PVC strip designed to securely fasten insect screens into standard 5/16” x ¾” frame channels. Compatible with multiple ADFORS screen types, it offers professional-grade durability and ease of installation, making it a top choice for both DIY enthusiasts and professionals.

## Description

Buy Saint-Gobain ADFORS FSP8521-U 100' Spline, .125 in X 100 ft, Black, Foot online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: Got this spline to install a "pet defense" screen on a patio door. The plastic screen is thicker but this spline worked perfectly.
Review: 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+

## Features

- 0.125 inch x 100 foot
- Secures screen into frame channel
- Easy to use
- Can be used with all types of insect screening
- This spline is suitable for l for screens such as ADFORS Pet Polyester Screen, ADFORS Solar Screen, and ADFORS Aluminum Screen when working with when working with a 5/16” x ¾” Frame

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00GWU82WK |
| ASIN  | B00GWU82WK |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #28,746 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3 in Window Screen Splines |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (9,528) |
| Customer reviews | 4.6 4.6 out of 5 stars (9,528) |
| Date First Available | 24 September 2014 |
| Date First Available  | 24 September 2014 |
| Included components | Saint-gobain ADFORS Spline, 125 in X 100 ft, Black |
| Is Discontinued By Manufacturer  | No |
| Item Package Quantity | 1 |
| Item Weight | 249 g |
| Item model number | FSP8521-U |
| Item model number  | FSP8521-U |
| Manufacturer | Saint-Gobain ADFORS |
| 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 |
| Product Dimensions  | 51.44 x 21.59 x 12.95 cm; 249 g |
| Size | .125 in X 100 ft |
| Style | .125" x 100' |

## Product Details

- **Brand:** Saint-Gobain ADFORS
- **Colour:** Black
- **Material:** Flexible PVC
- **No. of wires:** 1
- **Number of cable strands:** 1

## Images

![FSP8521-U 100' Spline, .125 in X 100 ft, Black, Foot - Image 1](https://m.media-amazon.com/images/I/81idxKikMuL.jpg)

## Available Options

This product comes in different **Pattern, Color, Size** options.

## Questions & Answers

**Q: My  screen has a spline groove that's about 1/4 inch. What size spline do I need?**
A: 1/4th inch would be .250 inches.  I suggest that you pull a small piece out and take it with you to your local hardware store to compare. About 1/4 inch is not a close enough measurement.  I had several screens (I think 6 screens) that were "about" 1/8 inch.  I found that there were three different sizes in the mix even though they "looked" to be "about" the same.

**Q: do i need to downsize the spline to install a longer lasting aluminum screen?**
A: Amazon sent me your q since I recently bought this product.  Check your screen to see if it currently has spline.  If so you need to go ahead and get replacement.  You might could use the the old but chances are it will rip enemies extracting, not last much longer, look lousy vs the new screen or all of the above.

**Q: What size spline do I need for a 5mm slot?**
A: .125"=.32cm.  and that will work on US screen
s.

**Q: What are the dimensions of the spline?**
A: The latest version of this spline I received is .097" thick and .298" wide. This is flexible spline and works well in my 18 year old screen room which takes more narrow spline than what is currently being sold at Lowe's and Home Depot.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by U***A on 7 July 2024*

Got this spline to install a "pet defense" screen on a patio door. The plastic screen is thicker but this spline worked perfectly.

### ⭐⭐⭐⭐⭐ Review
*by D***. on 17 April 2023*

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+

### ⭐⭐⭐⭐⭐ Review
*by A***R on 7 November 2024*

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.

## Frequently Bought Together

- Saint-Gobain ADFORS FSP8521-U 100' Spline, .125 in X 100 ft, Black, Foot
- Prime-Line P 7505 Screen Rolling Tool – A Must Have Tool for Installing Window and Door Screens – Spline Roller with Wood Handle and Steel Wheels – Durable and Easy to Use (Single Pack)
- Fiberglass Screen Roll High Visibility and Durable Screen Easy to DIY Repair or Rescreen Window and Door Screen

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.hr/products/279505822-fsp8521-u-100-spline-125-in-x-100-ft-black](https://www.desertcart.hr/products/279505822-fsp8521-u-100-spline-125-in-x-100-ft-black)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-07*