My screen has a spline groove that's about 1/4 inch. What size spline do I need?

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.

do i need to downsize the spline to install a longer lasting aluminum screen?

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.

What size spline do I need for a 5mm slot?

.125"=.32cm. and that will work on US screen s.

What are the dimensions of the spline?

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.

Saint Gobain Adfors 140x100 Black 1 Bag Spline

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Description

🖤 Lock in your view with flawless finesse!

DURABLE BLACK FINISH - Provides a clean, professional look that blends seamlessly with modern window frames.
EFFORTLESS INSTALLATION - User-friendly spline rolls smoothly into frame channels, saving time and frustration.
MADE IN THE USA QUALITY - Crafted by New York Wire, guaranteeing reliability and premium craftsmanship.
VERSATILE COMPATIBILITY - Works flawlessly with multiple ADFORS screen types, ensuring your project’s success.
PRECISION FIT FOR PRO RESULTS - Designed to secure screens like ADFORS Fiberglass and Extra Strength with exact channel compatibility.

The Saint-Gobain ADFORS .140x100' Black 1-Bag Spline is a high-quality, black screen retaining spline designed to fit 5/16” x ¾” frame channels. Ideal for securing various ADFORS screens, it offers easy installation and a sleek finish, made in the USA by New York Wire for dependable performance on any screening project.

Reviews

J**B

Excellent spline , durable, thinner than average splines and cost way better than other providers

Handyman and myself happy with purchase as hardware store, big box stores don’t carry this size of spline .125inch x 100 ft for old type window screens ! Especially for installing pet screens which are thicker than most screens! Kudos to Amazon.ca for having this product in stock! I had this type of spline many years ago!

10.10.2025

A**R

Tough, Flexible and Consistent

This is the right product for the job, have used two of these 100ft packs to replace all the screens on my house. Far better value than the smaller packs at the hardware store. It's tough yet flexible and always consistent, easily handling the fussy bits like working around the corners, the locating pegs and the puller where things can get a bit tight and fiddly. Choose the right size for your screen frames and this product will consistently create and hold the right tension during installation to make your new screen mesh look flawless.

21.05.2026

I**L

Buen producto

Cumple con lo señalado

6.08.2024

C**S

Excelente

Excelente como complemento de screen resistente a mascotas.

3.10.2025

C**6

Happy customer

Great service Great product and great price Thank you

16.05.2026

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Manufacturer	New York Wire
Country of Origin	USA
Item model number	FSP8522
Product Dimensions	2.54 x 17.78 x 25.4 cm; 272.16 g
ASIN	B000P16HDI

Saint-Gobain ADFORS .140x100' BLACK 1-BAG SPLINE

Description

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Common Questions